A ZIP Code is the postal code used by the United States Postal Service, which always writes it with capital letters. ''ZIP'' is an acronym for the Zoning Improvement Plan, but was also cleverly meant to suggest that mail travels more efficiently (and therefore faster) when senders use it. The basic ZIP Code format consists of five numerical digits. An extended ZIP+4 code includes the five digits of the ZIP Code plus four digits which allow a piece of mail to be delivered to a specific address. ''ZIP Code'' was originally registered as a trademark by the U.S. Postal Service, but its registration has since expired. ==Background== The postal service implemented postal zones for large cities in 1943. For example: John Smith 3256 Epiphenomenal Avenue Minneapolis 16, Minnesota The "16" is the number of the postal zone within the city. ==Development== By the early 1960s a more general system was needed, and on July 1, 1963, non-mandatory ZIP Codes were announced for the whole country. Robert Moon, an employee of the post office, is considered the father of the ZIP Code. He first submitted his proposal in 1944 while working as a postal inspector. The post office only gives credit to Moon for the first 3 digits of the ZIP Code, which describe the region of the country. In most cases, the last two digits of the ZIP Code coincide with the older postal zone number, thus: John Smith 3256 Epiphenomenal Avenue Minneapolis, Minnesota 55416 In 1967, these were made mandatory for second- and third-class bulk mailers and the system was soon adopted generally. The United States Post Office used a cartoon character, Mr. ZIP, to promote use of the ZIP Code in the 1970s. ===Postal abbreviations=== In addition, U.S. postal abbreviations were introduced for states, eliminating the need to write the state's name out in full. For example, California is CA. Abbreviations are also assigned U.S. postal abbreviations#Territories and commonwealths like Puerto Rico (PR) and American Samoa (AS), as well as for several former U.S. Trust Territories in the Pacific, such as the Federated States of Micronesia (FM), which are now separate countries. Similarly, US military addresses also have U.S. postal abbreviations#Armed forces. Mail to these addresses is sent to the Army (or Airforce) Post Office (APO) or Fleet Post Office (FPO). This may also be used for mail to many US diplomatic missions overseas. ===ZIP+4=== In 1983, the US Postal Service began using an expanded ZIP Code system called "ZIP+4", which are often called "plus-four codes" or "add-on codes." A ZIP+4 code uses the basic 5-digit ZIP plus an additional 4-digits to identify a geographic segment within the 5-digit delivery area, such as a city block or a group of apartments or an individual high-volume receiver of mail, or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery. Use of the plus-four code is not required, but it helps the Postal Service direct mail more efficiently and accurately. By decreasing handling and in turn, the potential for misdelivery, the plus-four code also lowers delivery cost. For Post Office boxes, the general (but not invariable) rule is that each box has its own ZIP+4 code. The add-on code is often either the last four digits of the box number or 0 plus the last three digits of the box number. However, there is no uniform rule, so the ZIP+4 code must be looked up individually for each box. It is common to use add-on code 9998 for mail addressed to the postmaster, 9999 for general delivery, and other high-numbered add-on codes for business reply mail and requests for special cancellation of stamps. For a unique ZIP code (explained below), the add-on code is typically 0001. ===Postal bar code=== The ZIP Code is often translated into a barcode called POSTNET, that is printed on the mailpiece as well, to make it easier for automated machines to sort the mail. Unlike most barcode symbologies, POSTNET uses long and short bars, not thin and thick bars. The barcode can be printed by the person who sends the mail, or the post office will put one on when they receive it. If the post office does it, they either have a machine Optical character recognition it, or have a human read the address if absolutely necessary. (The automated machinery has the unfortunate tendency to paste the coding over the bottom half-inch of postcards, often obliterating the signature.) People who send bulk mail can get a discount on postage if they have pre-printed the barcode themselves. This requires only a simple and often free as in beer typeface, and the knowledge of at least the main 5-digit code, if all 9 are not available. An additional two Numerical digits are usually used to indicate the exact delivery point, so that every single mailable point in the country has its own 11-digit number (at least in theory). These two digits are usually the last two of the street address or box number, though non-numeric points with names or alphabets are assigned DP numbers by the local post office. However, when house numbers differ only by a letter suffix, e.g., 120 and 120A, the delivery point may be the same. The last digit is ''always'' a check digit, which is obtained by adding up the 5-, 9-, or 11-digits, then subtracting the last digit of that result from 10. (Thus, the check digit for 10001-0001 00 would be 7, or 1+1+1=3 and 10−3=7.) The sender needs only to type something like /100010001007/ in the 12-point POSTNET font to create the code for printing. ==Structure and allocation== ===By geography=== ZIP Codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city), and the fourth and fifth digits representing more specific areas, such as small towns or regions of that city. The main town in a region (if applicable) often gets the first ZIP Codes for that region; afterwards, the numerical order often follows the alphabetical order. Geographically, many of the lowest ZIP Codes are in the New England (U.S.) region, since these begin with '0'. Also in the '0' region are Puerto Rico, the US Virgin Islands and APO/FPO military addresses for personnel stationed in Europe. Some low zip codes are: 00501 for Holtsville, New York (a unique ZIP code for the U.S. Internal Revenue Service center there); 00601 for Adjuntas, Puerto Rico; 01001 for Agawam, Massachusetts, and 01002 for Amherst, Massachusetts. The numbers increase southward along the East Coast, such as 10036 (New York City), 20500 (Washington, DC), 30303 (Atlanta, Georgia), and 33130 (Miami, Florida). From there, the numbers begin increasing heading westward and northward. For example, 40202 is in Louisville, Kentucky, 50309 in Des Moines, Iowa, 60601 in Chicago, Illinois, 75201 in Dallas, Texas, 80202 in Denver, Colorado, 94111 in San Francisco, California, 98101 in Seattle, Washington, and 99950 in Ketchikan, Alaska. 3-digit_ZIP_Codes:_0-1_•_3-digit_ZIP_Codes:_2-3_•_3-digit_ZIP_Codes:_4-5_•_3-digit_ZIP_Codes:_6-7_•_3-digit_ZIP_Codes:_8-9">Image:ZIP_code_zones.png|thumb|right|400px|Map of ZIP code zones.
3-digit lists: 3-digit ZIP Codes: 0-1 • 3-digit ZIP Codes: 2-3 • 3-digit ZIP Codes: 4-5 • 3-digit ZIP Codes: 6-7 • 3-digit ZIP Codes: 8-9 The first digit of the ZIP code is allocated as follows: * 0 = Connecticut (CT), Massachusetts (MA), Maine (ME), New Hampshire (NH), New Jersey (NJ), Puerto Rico (PR), Rhode Island (RI), Vermont (VT), Virgin Islands (VI), Army post office (AE), Fleet Post Office (AE). * 1 = Delaware (DE), New York (NY), Pennsylvania (PA) * 2 = District of Columbia (DC), Maryland (MD), North Carolina (NC), South Carolina (SC), Virginia (VA), West Virginia (WV) * 3 = Alabama (AL), Florida (FL), Georgia (U.S. state) (GA), Mississippi (MS), Tennessee (TN), APO Americas (AA), FPO Americas (AA). * 4 = Indiana (IN), Kentucky (KY), Michigan (MI), Ohio (OH) * 5 = Iowa (IA), Minnesota (MN), Montana (MT), North Dakota (ND), South Dakota (SD), Wisconsin (WI) * 6 = Illinois (IL), Kansas (KS), Missouri (MO), Nebraska (NE) * 7 = Arkansas (AR), Louisiana (LA), Oklahoma (OK), Texas (TX) * 8 = Arizona (AZ), Colorado (CO), Idaho (ID), New Mexico (NM), Nevada (NV), Utah (UT), Wyoming (WY) * 9 = Alaska (AK), American Samoa (AS), California (CA), Guam (GU), Hawaii (HI), Northern Mariana Islands (MP), Oregon (OR), Washington (WA), APO Pacific (AP), FPO Pacific (AP). Other U.S. territories have codes starting with 9. However, with the expansion of ZIP codes, the assignment of the first digit to a group of states has broken down. For example, ZIP codes beginning with 0 and 1 are in use in New York; beginning with 2 and 5, in the District of Columbia; and beginning with 7 and 8, in Texas. The next two digits represent the sectional center facility (sortation facility for a region) (e.g. 432xx = Columbus OH), and the fourth and fifth digits represents the area of the city (if in a metropolitan area), or a village/town (outside metro areas): 43209 (4=Ohio,32=Columbus,09=Bexley). When a sectional center facility's area crosses state lines, that facility is assigned separate three-digit prefixes for the states that it serves; thus, it is possible to identify the state associated with any ZIP code just by looking at the first three digits. ====ZIP-code changes==== Like area codes, ZIP Codes are sometimes divided and changed, especially when a rural area becomes suburban. Typically, the new ZIP codes become effective once announced, and a grace period (e.g., one year) is provided in which the new and old ZIP codes are used concurrently, so that postal patrons in the affected area can notify correspondents, order new stationery, etc. Most significantly, in rapidly developing suburbs, it is sometimes necessary to open a new sectional center facility, which must then be allocated its own three-digit ZIP-code prefix or prefixes. Such allocation can be done in various ways. For example, when a new sectional center facility was opened at Dulles Airport in Virginia, the prefix 201 was allocated to that facility; therefore, for all post offices to be served by that sectional center facility, the ZIP code changed from an old code beginning with 220 or 221 to a new code or codes beginning with 201. However, when a new sectional center facility was opened to serve Montgomery County, Maryland, no new prefix was assigned. Instead, ZIP codes in the 207 and 208 ranges, which had previously been assigned alphabetically, were reshuffled so that 207xx ZIP codes in Montgomery County were changed to 208xx codes, while 208xx codes outside that county were changed to 207xx codes. Because Silver Spring, Maryland (whose postal area includes Wheaton, Maryland) has its own prefix, 209, there was no need to apply the reshuffling to Silver Spring; instead, all mail going to 209xx ZIP codes was simply rerouted to the new sectional center facility. ZIP codes also change when postal boundaries are realigned. For example, at the same time at which the above-noted change in Montgomery County took place, and under pressure from then D.C. Mayor Marion Barry, the USPS realigned the postal boundary between the District of Columbia and Maryland to match the actual boundary. Previously, many inner suburbs, such as Bethesda, Maryland and Takoma Park, Maryland, had been in the Washington, D.C., postal area. As a result of the change, ZIP codes in Maryland beginning with 200 were changed to new ZIP codes beginning with 207, 208, or 209, depending on their location, and ZIP codes straddling the D.C.-Maryland line were split. For example, 20014 (Bethesda) became 20814, while the Maryland portion of 20012 (Takoma Park) became 20912. ===By type (i.e., use)=== There are three types of ZIP codes: unique (assigned to a single high-volume mailer), PO box only (used only for PO boxes at a given facility, not for any other type of delivery), and standard (all other ZIP codes). As examples of unique ZIP codes, certain governmental agencies, universities, businesses, or buildings that receive extremely high volumes of mail have their own unique ZIP Code, such as 81009 for the Federal Citizen Information Center (FCIC) of the U.S. General Services Administration (GSA) [http://www.pueblo.gsa.gov] in Pueblo, Colorado, 21250 for University of Maryland Baltimore County, 30385 for BellSouth in Atlanta, and 10048 for the World Trade Center complex in New York, New York (until its destruction on September_11%2C_2001). The White House has its own secret ZIP Code, separate from the publicly-known 20500, for the President of the United States and his family to receive private mail. An example of a "PO box only" ZIP code is 22313, which is used for PO boxes at the main post office in Alexandria, Virginia. In the area surrounding that post office, home and business mail delivery addresses use ZIP code 22314, which is thus a standard ZIP code. The above will be made clearer by examining the allocation of ZIP codes in Princeton, New Jersey: *08540, standard (deliveries in most of the Princeton postal area) *08541, unique (Educational Testing Service) *08542, standard (deliveries in the central area of the borough of Princeton) *08543, PO box only (PO boxes at the main post office) *08544, unique (Princeton University) ==Other uses== Delivery services other than the USPS, such as Federal Express, United Parcel Service, and DHL require a ZIP code for the optimal internal routing of a package. This spares customers from being required to use some other routing designator, such as the IATA airport code of the destination airport or railhead. ZIP Codes are used not only for tracking of mail, but in gathering geographical statistics in the United States. The United States Census Bureau keeps track of the latitude and longitude of the center-point of each ZIP Code, a database which numerous other companies sell. The data are often used in direct mail campaigns in a process called ZIP Code marketing, developed by Martin Baier. ZIP-coded data is also used in analyzing geographic factors in risk, an insurance industry and banking practice pejoratively known as redlining. ==Pop culture== * Around the year 2000, ''National Geographic'' magazine instituted a regular feature focusing, each month, on one ZIP Code in the United States. * ZIP codes can take on a certain amount of cachet or become bywords: ''90210'' in Beverly Hills, California being probably the most famous example appears in the titles of two Beverly Hills-centric television shows: ''Beverly Hills, 90210'' and ''Dr. 90210''. ==See also== ===U.S. Postal Service codes=== *List of ZIP Codes in the United States *U.S. postal abbreviations ===Postal Codes in other countries=== *Postal code *Lists of postal codes ==External links== *[http://www.usps.com/zip4/ ZIP Code lookup] from the United States Postal Service. *[http://www.zip-area.com US Zip and Area codes] Structured and mapped directory. *[http://acg.media.mit.edu/people/fry/zipdecode/ Java Applet Showing US ZIP Code Distribution] *[http://www.downloadzipcode.com/ ZIP Code Download] Free ZIP Code Lookup. *[http://www.paweb2.com/zip.htm Zip Code - Zip Codes - All States Alphabetic and Numeric Zip Codes] *[http://www.zipcodeworld.com ZIP Code Subscription Service] Geocodes Postal system
Mention Mr. Zip? --User:Daniel C. Boyer :Obviously before my time. Description? Years? In movies? On TV? In school educational films? What? --User:Brion VIBBER ::See external link. --User:Daniel C. Boyer "In general, zip codes have no intrinsic meaning; however, the area around Concord, Massachusetts? has the zip code 01776." -- what is meaningful about the number 01776? -- User:Tarquin 09:37 Oct 8, 2002 (UTC) : If I'm correct (I'm not an American), Concord's one of the places where the American Revolution began, and in 1776, the Declaration of Independence was signed. User:Jheijmans ** Correct, and noted in article User:DavidLevinson ---- Removed the following from article: * ''In general, ZIP codes have no intrinsic meaning; however, the area around Concord, Massachusetts has the ZIP code 01776, representing the year of America's Declaration of Independence, as the Battle of Lexington and Concord was one of the opening battles of the American Revolutionary War (though it took place in April 1775).'' Actually, Concord's zip is 01742; Sudbury (6 miles away)is 01776 and Wayland (8 miles away) is 01778. However, these predate ZIP codes. Concord's post office was "Boston 42, Mass." or sometimes "Boston 42, Mass." and Sudbury was "Boston 76, Mass." or sometimes "Boston 76, Mass." -- User:Bcorr 19:58, 1 Oct 2003 (UTC) ---- Source of the "secret White House ZIP Code" bit, anyone? -User:Penta 04:30, 21 May 2004 (UTC) * It's mentioned in a deposition from Travelgate: [http://www.whatreallyhappened.com/RANCHO/POLITICS/DEPOSITIONS/huber.htm] (text search for "zip code"), assuming that transcript is legitimate -- saying that the President is informed of his private zip code upon taking office. There is also the text of a speech by President Clinton ([http://clinton6.nara.gov/2000/03/2000-03-03-presidential-remarks-to-aspen-institute.html]) where he explicitly mentions the special zip code that he has given out to "ordinary people that he grew up with". It was also mentioned in the media, but most of the references I found specifically mentioned President Clinton. These special ZIPs may be specific to each President, and the current President may or may not have one.
Also, this link at whitehouse.gov [http://www.whitehouse.gov/kids/connection/20011012.html] states that the USPS can and does create special zip codes for specific government functions, but doesn't state that the President has one.
Even if the President does have one, there's no reason here to believe that it is a unique 5-digit ZIP; it could just be a special +4 code. Which is about as "special" as having your own post-office box. - User:KeithTyler 17:42, Oct 11, 2004 (UTC) Does anyone know the source/reasoning of the two letter state abbrieviations? I've always wondered why Iowa is IA and not IO, for example. --User:Feitclub 20:38, Sep 6, 2004 (UTC) == White House ZIP Code == The ZIP Code for the White House is 20500. It's been my understanding that the President's friends are given a special code they write on envelopes that ensures it reaches him and doesn't go into the slush pile. I read this many years ago and it was a plot point in a "West Wing" episode, as well. User:PedanticallySpeaking 16:49, Oct 11, 2004 (UTC) :Most of the 205xx space is taken up either by the White House or by the DC Post Office. (Oddly, 20500-20502 centers at Pennsylvania Ave, but 20509 centers on E st in the middle of the grounds.) 20528 also centers on the White House grounds. - User:KeithTyler 18:06, Oct 11, 2004 (UTC) == Change frequency == A new zipcode database is published every month now. I would like to know about how many zipcodes change every month, and what grace periods communities have to respond. The answer is of interest to those of use who use the data for zipcode-based searches, and need to know how frequently it's necessary to freshen the data. :I'm personally not aware of a case where a location's ZIP codes have changed, but hopefully someone else may know of one. My expectation is that ZIP codes are mostly created for newly developed areas (and sometimes skyscrapers) but not split a la Area codes. ::Actually, ZIP codes can be split or renumbered. Both of these things happened in Montgomery County, Maryland, in 1981. The new ZIP codes became effective on the day on which we were notified of them, and we were given a one-year grace period to change over. :The USPS is a federally managed agency (or something), so it would seem clear that there is no grace period needed. The post office(s) in the area are aware of the ZIP code, and begin honoring it immediately. ::See above. The post offices are aware of the new ZIP code, but the rest of us need time to notify others of the change, use up old stationery, and the like. :Keep in mind that the zipcode database also includes +4 codes, which are likely added a lot more often than the base 5-digit codes. :USPS provides a flat file called [http://www.usps.com/ncsc/addressinfo/zipmove.htm ZIPMove] that provides a list of changes in zip codes; this appears to be a pay service. :User:KeithTyler ''[ User_talk:KeithTyler] '' 20:04, Feb 11, 2005 (UTC)
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ZIP Code
A ZIP Code is the postal code used by the United States Postal Service, which always writes it with capital letters. ''ZIP'' is an acronym for the Zoning Improvement Plan, but was also cleverly meant to suggest that mail travels more efficiently (and therefore faster) when senders use it. The basic ZIP Code format consists of five numerical digits. An extended ZIP+4 code includes the five digits of the ZIP Code plus four digits which allow a piece of mail to be delivered to a specific address. ''ZIP Code'' was originally registered as a trademark by the U.S. Postal Service, but its registration has since expired. ==Background== The postal service implemented postal zones for large cities in 1943. For example: John Smith 3256 Epiphenomenal Avenue Minneapolis 16, Minnesota The "16" is the number of the postal zone within the city. ==Development== By the early 1960s a more general system was needed, and on July 1, 1963, non-mandatory ZIP Codes were announced for the whole country. Robert Moon, an employee of the post office, is considered the father of the ZIP Code. He first submitted his proposal in 1944 while working as a postal inspector. The post office only gives credit to Moon for the first 3 digits of the ZIP Code, which describe the region of the country. In most cases, the last two digits of the ZIP Code coincide with the older postal zone number, thus: John Smith 3256 Epiphenomenal Avenue Minneapolis, Minnesota 55416 In 1967, these were made mandatory for second- and third-class bulk mailers and the system was soon adopted generally. The United States Post Office used a cartoon character, Mr. ZIP, to promote use of the ZIP Code in the 1970s. ===Postal abbreviations=== In addition, U.S. postal abbreviations were introduced for states, eliminating the need to write the state's name out in full. For example, California is CA. Abbreviations are also assigned U.S. postal abbreviations#Territories and commonwealths like Puerto Rico (PR) and American Samoa (AS), as well as for several former U.S. Trust Territories in the Pacific, such as the Federated States of Micronesia (FM), which are now separate countries. Similarly, US military addresses also have U.S. postal abbreviations#Armed forces. Mail to these addresses is sent to the Army (or Airforce) Post Office (APO) or Fleet Post Office (FPO). This may also be used for mail to many US diplomatic missions overseas. ===ZIP+4=== In 1983, the US Postal Service began using an expanded ZIP Code system called "ZIP+4", which are often called "plus-four codes" or "add-on codes." A ZIP+4 code uses the basic 5-digit ZIP plus an additional 4-digits to identify a geographic segment within the 5-digit delivery area, such as a city block or a group of apartments or an individual high-volume receiver of mail, or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery. Use of the plus-four code is not required, but it helps the Postal Service direct mail more efficiently and accurately. By decreasing handling and in turn, the potential for misdelivery, the plus-four code also lowers delivery cost. For Post Office boxes, the general (but not invariable) rule is that each box has its own ZIP+4 code. The add-on code is often either the last four digits of the box number or 0 plus the last three digits of the box number. However, there is no uniform rule, so the ZIP+4 code must be looked up individually for each box. It is common to use add-on code 9998 for mail addressed to the postmaster, 9999 for general delivery, and other high-numbered add-on codes for business reply mail and requests for special cancellation of stamps. For a unique ZIP code (explained below), the add-on code is typically 0001. ===Postal bar code=== The ZIP Code is often translated into a barcode called POSTNET, that is printed on the mailpiece as well, to make it easier for automated machines to sort the mail. Unlike most barcode symbologies, POSTNET uses long and short bars, not thin and thick bars. The barcode can be printed by the person who sends the mail, or the post office will put one on when they receive it. If the post office does it, they either have a machine Optical character recognition it, or have a human read the address if absolutely necessary. (The automated machinery has the unfortunate tendency to paste the coding over the bottom half-inch of postcards, often obliterating the signature.) People who send bulk mail can get a discount on postage if they have pre-printed the barcode themselves. This requires only a simple and often free as in beer typeface, and the knowledge of at least the main 5-digit code, if all 9 are not available. An additional two Numerical digits are usually used to indicate the exact delivery point, so that every single mailable point in the country has its own 11-digit number (at least in theory). These two digits are usually the last two of the street address or box number, though non-numeric points with names or alphabets are assigned DP numbers by the local post office. However, when house numbers differ only by a letter suffix, e.g., 120 and 120A, the delivery point may be the same. The last digit is ''always'' a check digit, which is obtained by adding up the 5-, 9-, or 11-digits, then subtracting the last digit of that result from 10. (Thus, the check digit for 10001-0001 00 would be 7, or 1+1+1=3 and 10−3=7.) The sender needs only to type something like /100010001007/ in the 12-point POSTNET font to create the code for printing. ==Structure and allocation== ===By geography=== ZIP Codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city), and the fourth and fifth digits representing more specific areas, such as small towns or regions of that city. The main town in a region (if applicable) often gets the first ZIP Codes for that region; afterwards, the numerical order often follows the alphabetical order. Geographically, many of the lowest ZIP Codes are in the New England (U.S.) region, since these begin with '0'. Also in the '0' region are Puerto Rico, the US Virgin Islands and APO/FPO military addresses for personnel stationed in Europe. Some low zip codes are: 00501 for Holtsville, New York (a unique ZIP code for the U.S. Internal Revenue Service center there); 00601 for Adjuntas, Puerto Rico; 01001 for Agawam, Massachusetts, and 01002 for Amherst, Massachusetts. The numbers increase southward along the East Coast, such as 10036 (New York City), 20500 (Washington, DC), 30303 (Atlanta, Georgia), and 33130 (Miami, Florida). From there, the numbers begin increasing heading westward and northward. For example, 40202 is in Louisville, Kentucky, 50309 in Des Moines, Iowa, 60601 in Chicago, Illinois, 75201 in Dallas, Texas, 80202 in Denver, Colorado, 94111 in San Francisco, California, 98101 in Seattle, Washington, and 99950 in Ketchikan, Alaska. 3-digit_ZIP_Codes:_0-1_•_
3-digit lists: 3-digit ZIP Codes: 0-1 • 3-digit ZIP Codes: 2-3 • 3-digit ZIP Codes: 4-5 • 3-digit ZIP Codes: 6-7 • 3-digit ZIP Codes: 8-9 The first digit of the ZIP code is allocated as follows: * 0 = Connecticut (CT), Massachusetts (MA), Maine (ME), New Hampshire (NH), New Jersey (NJ), Puerto Rico (PR), Rhode Island (RI), Vermont (VT), Virgin Islands (VI), Army post office (AE), Fleet Post Office (AE). * 1 = Delaware (DE), New York (NY), Pennsylvania (PA) * 2 = District of Columbia (DC), Maryland (MD), North Carolina (NC), South Carolina (SC), Virginia (VA), West Virginia (WV) * 3 = Alabama (AL), Florida (FL), Georgia (U.S. state) (GA), Mississippi (MS), Tennessee (TN), APO Americas (AA), FPO Americas (AA). * 4 = Indiana (IN), Kentucky (KY), Michigan (MI), Ohio (OH) * 5 = Iowa (IA), Minnesota (MN), Montana (MT), North Dakota (ND), South Dakota (SD), Wisconsin (WI) * 6 = Illinois (IL), Kansas (KS), Missouri (MO), Nebraska (NE) * 7 = Arkansas (AR), Louisiana (LA), Oklahoma (OK), Texas (TX) * 8 = Arizona (AZ), Colorado (CO), Idaho (ID), New Mexico (NM), Nevada (NV), Utah (UT), Wyoming (WY) * 9 = Alaska (AK), American Samoa (AS), California (CA), Guam (GU), Hawaii (HI), Northern Mariana Islands (MP), Oregon (OR), Washington (WA), APO Pacific (AP), FPO Pacific (AP). Other U.S. territories have codes starting with 9. However, with the expansion of ZIP codes, the assignment of the first digit to a group of states has broken down. For example, ZIP codes beginning with 0 and 1 are in use in New York; beginning with 2 and 5, in the District of Columbia; and beginning with 7 and 8, in Texas. The next two digits represent the sectional center facility (sortation facility for a region) (e.g. 432xx = Columbus OH), and the fourth and fifth digits represents the area of the city (if in a metropolitan area), or a village/town (outside metro areas): 43209 (4=Ohio,32=Columbus,09=Bexley). When a sectional center facility's area crosses state lines, that facility is assigned separate three-digit prefixes for the states that it serves; thus, it is possible to identify the state associated with any ZIP code just by looking at the first three digits. ====ZIP-code changes==== Like area codes, ZIP Codes are sometimes divided and changed, especially when a rural area becomes suburban. Typically, the new ZIP codes become effective once announced, and a grace period (e.g., one year) is provided in which the new and old ZIP codes are used concurrently, so that postal patrons in the affected area can notify correspondents, order new stationery, etc. Most significantly, in rapidly developing suburbs, it is sometimes necessary to open a new sectional center facility, which must then be allocated its own three-digit ZIP-code prefix or prefixes. Such allocation can be done in various ways. For example, when a new sectional center facility was opened at Dulles Airport in Virginia, the prefix 201 was allocated to that facility; therefore, for all post offices to be served by that sectional center facility, the ZIP code changed from an old code beginning with 220 or 221 to a new code or codes beginning with 201. However, when a new sectional center facility was opened to serve Montgomery County, Maryland, no new prefix was assigned. Instead, ZIP codes in the 207 and 208 ranges, which had previously been assigned alphabetically, were reshuffled so that 207xx ZIP codes in Montgomery County were changed to 208xx codes, while 208xx codes outside that county were changed to 207xx codes. Because Silver Spring, Maryland (whose postal area includes Wheaton, Maryland) has its own prefix, 209, there was no need to apply the reshuffling to Silver Spring; instead, all mail going to 209xx ZIP codes was simply rerouted to the new sectional center facility. ZIP codes also change when postal boundaries are realigned. For example, at the same time at which the above-noted change in Montgomery County took place, and under pressure from then D.C. Mayor Marion Barry, the USPS realigned the postal boundary between the District of Columbia and Maryland to match the actual boundary. Previously, many inner suburbs, such as Bethesda, Maryland and Takoma Park, Maryland, had been in the Washington, D.C., postal area. As a result of the change, ZIP codes in Maryland beginning with 200 were changed to new ZIP codes beginning with 207, 208, or 209, depending on their location, and ZIP codes straddling the D.C.-Maryland line were split. For example, 20014 (Bethesda) became 20814, while the Maryland portion of 20012 (Takoma Park) became 20912. ===By type (i.e., use)=== There are three types of ZIP codes: unique (assigned to a single high-volume mailer), PO box only (used only for PO boxes at a given facility, not for any other type of delivery), and standard (all other ZIP codes). As examples of unique ZIP codes, certain governmental agencies, universities, businesses, or buildings that receive extremely high volumes of mail have their own unique ZIP Code, such as 81009 for the Federal Citizen Information Center (FCIC) of the U.S. General Services Administration (GSA) [http://www.pueblo.gsa.gov] in Pueblo, Colorado, 21250 for University of Maryland Baltimore County, 30385 for BellSouth in Atlanta, and 10048 for the World Trade Center complex in New York, New York (until its destruction on September_11%2C_2001). The White House has its own secret ZIP Code, separate from the publicly-known 20500, for the President of the United States and his family to receive private mail. An example of a "PO box only" ZIP code is 22313, which is used for PO boxes at the main post office in Alexandria, Virginia. In the area surrounding that post office, home and business mail delivery addresses use ZIP code 22314, which is thus a standard ZIP code. The above will be made clearer by examining the allocation of ZIP codes in Princeton, New Jersey: *08540, standard (deliveries in most of the Princeton postal area) *08541, unique (Educational Testing Service) *08542, standard (deliveries in the central area of the borough of Princeton) *08543, PO box only (PO boxes at the main post office) *08544, unique (Princeton University) ==Other uses== Delivery services other than the USPS, such as Federal Express, United Parcel Service, and DHL require a ZIP code for the optimal internal routing of a package. This spares customers from being required to use some other routing designator, such as the IATA airport code of the destination airport or railhead. ZIP Codes are used not only for tracking of mail, but in gathering geographical statistics in the United States. The United States Census Bureau keeps track of the latitude and longitude of the center-point of each ZIP Code, a database which numerous other companies sell. The data are often used in direct mail campaigns in a process called ZIP Code marketing, developed by Martin Baier. ZIP-coded data is also used in analyzing geographic factors in risk, an insurance industry and banking practice pejoratively known as redlining. ==Pop culture== * Around the year 2000, ''National Geographic'' magazine instituted a regular feature focusing, each month, on one ZIP Code in the United States. * ZIP codes can take on a certain amount of cachet or become bywords: ''90210'' in Beverly Hills, California being probably the most famous example appears in the titles of two Beverly Hills-centric television shows: ''Beverly Hills, 90210'' and ''Dr. 90210''. ==See also== ===U.S. Postal Service codes=== *List of ZIP Codes in the United States *U.S. postal abbreviations ===Postal Codes in other countries=== *Postal code *Lists of postal codes ==External links== *[http://www.usps.com/zip4/ ZIP Code lookup] from the United States Postal Service. *[http://www.zip-area.com US Zip and Area codes] Structured and mapped directory. *[http://acg.media.mit.edu/people/fry/zipdecode/ Java Applet Showing US ZIP Code Distribution] *[http://www.downloadzipcode.com/ ZIP Code Download] Free ZIP Code Lookup. *[http://www.paweb2.com/zip.htm Zip Code - Zip Codes - All States Alphabetic and Numeric Zip Codes] *[http://www.zipcodeworld.com ZIP Code Subscription Service] Geocodes Postal system
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Mention Mr. Zip? --User:Daniel C. Boyer :Obviously before my time. Description? Years? In movies? On TV? In school educational films? What? --User:Brion VIBBER ::See external link. --User:Daniel C. Boyer "In general, zip codes have no intrinsic meaning; however, the area around Concord, Massachusetts? has the zip code 01776." -- what is meaningful about the number 01776? -- User:Tarquin 09:37 Oct 8, 2002 (UTC) : If I'm correct (I'm not an American), Concord's one of the places where the American Revolution began, and in 1776, the Declaration of Independence was signed. User:Jheijmans ** Correct, and noted in article User:DavidLevinson ---- Removed the following from article: * ''In general, ZIP codes have no intrinsic meaning; however, the area around Concord, Massachusetts has the ZIP code 01776, representing the year of America's Declaration of Independence, as the Battle of Lexington and Concord was one of the opening battles of the American Revolutionary War (though it took place in April 1775).'' Actually, Concord's zip is 01742; Sudbury (6 miles away)is 01776 and Wayland (8 miles away) is 01778. However, these predate ZIP codes. Concord's post office was "Boston 42, Mass." or sometimes "Boston 42, Mass." and Sudbury was "Boston 76, Mass." or sometimes "Boston 76, Mass." -- User:Bcorr 19:58, 1 Oct 2003 (UTC) ---- Source of the "secret White House ZIP Code" bit, anyone? -User:Penta 04:30, 21 May 2004 (UTC) * It's mentioned in a deposition from Travelgate: [http://www.whatreallyhappened.com/RANCHO/POLITICS/DEPOSITIONS/huber.htm] (text search for "zip code"), assuming that transcript is legitimate -- saying that the President is informed of his private zip code upon taking office. There is also the text of a speech by President Clinton ([http://clinton6.nara.gov/2000/03/2000-03-03-presidential-remarks-to-aspen-institute.html]) where he explicitly mentions the special zip code that he has given out to "ordinary people that he grew up with". It was also mentioned in the media, but most of the references I found specifically mentioned President Clinton. These special ZIPs may be specific to each President, and the current President may or may not have one.
Also, this link at whitehouse.gov [http://www.whitehouse.gov/kids/connection/20011012.html] states that the USPS can and does create special zip codes for specific government functions, but doesn't state that the President has one.
Even if the President does have one, there's no reason here to believe that it is a unique 5-digit ZIP; it could just be a special +4 code. Which is about as "special" as having your own post-office box. - User:KeithTyler 17:42, Oct 11, 2004 (UTC) Does anyone know the source/reasoning of the two letter state abbrieviations? I've always wondered why Iowa is IA and not IO, for example. --User:Feitclub 20:38, Sep 6, 2004 (UTC) == White House ZIP Code == The ZIP Code for the White House is 20500. It's been my understanding that the President's friends are given a special code they write on envelopes that ensures it reaches him and doesn't go into the slush pile. I read this many years ago and it was a plot point in a "West Wing" episode, as well. User:PedanticallySpeaking 16:49, Oct 11, 2004 (UTC) :Most of the 205xx space is taken up either by the White House or by the DC Post Office. (Oddly, 20500-20502 centers at Pennsylvania Ave, but 20509 centers on E st in the middle of the grounds.) 20528 also centers on the White House grounds. - User:KeithTyler 18:06, Oct 11, 2004 (UTC) == Change frequency == A new zipcode database is published every month now. I would like to know about how many zipcodes change every month, and what grace periods communities have to respond. The answer is of interest to those of use who use the data for zipcode-based searches, and need to know how frequently it's necessary to freshen the data. :I'm personally not aware of a case where a location's ZIP codes have changed, but hopefully someone else may know of one. My expectation is that ZIP codes are mostly created for newly developed areas (and sometimes skyscrapers) but not split a la Area codes. ::Actually, ZIP codes can be split or renumbered. Both of these things happened in Montgomery County, Maryland, in 1981. The new ZIP codes became effective on the day on which we were notified of them, and we were given a one-year grace period to change over. :The USPS is a federally managed agency (or something), so it would seem clear that there is no grace period needed. The post office(s) in the area are aware of the ZIP code, and begin honoring it immediately. ::See above. The post offices are aware of the new ZIP code, but the rest of us need time to notify others of the change, use up old stationery, and the like. :Keep in mind that the zipcode database also includes +4 codes, which are likely added a lot more often than the base 5-digit codes. :USPS provides a flat file called [http://www.usps.com/ncsc/addressinfo/zipmove.htm ZIPMove] that provides a list of changes in zip codes; this appears to be a pay service. :User:KeithTyler ''
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ZA | ZB | ZC | ZD | ZE | ZF | ZG | ZH | ZI | ZJ | ZK | ZL | ZM | ZN | ZO | ZP | ZR | ZS | ZT | ZU | ZW | ZX | ZY |Words begining with ZIP_code:
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