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🇺🇸 USAZip.Codes
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ZIP CODES IN UNITED STATES


ENTER ZIP CODE OR PLACE NAME TO DISPLAY INFO:

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FIND ALL ZIP CODES BY:


MOST COMMON PLACE

 * Washington (297)
 * Apo Ae (295)
 * Houston (187)
 * New York (146)
 * El Paso (139)
 * Apo Aa (128)
 * Dallas (114)
 * Springfield (106)
 * Miami (103)
 * Sacramento (103)
 * Atlanta (102)
 * Los Angeles (94)
 * Philadelphia (91)
 * Kansas City (86)
 * San Antonio (85)
 * Chicago (84)
 * Columbus (82)
 * Austin (81)
 * Charlotte (80)
 * Phoenix (80)


STATE

 * Texas (2600)
 * California (2592)
 * Pennsylvania (2176)
 * New York (2154)
 * Illinois (1575)
 * Florida (1473)
 * Ohio (1415)
 * Virginia (1214)
 * Michigan (1159)
 * Missouri (1157)
 * North Carolina (1081)
 * Iowa (1055)
 * Minnesota (992)
 * Indiana (968)
 * Georgia (952)
 * Kentucky (946)
 * Wisconsin (896)
 * West Virginia (851)
 * Alabama (811)
 * Tennessee (785)
 * Oklahoma (764)
 * Kansas (748)
 * New Jersey (723)
 * Louisiana (719)
 * Washington (716)
 * Arkansas (706)
 * Massachusetts (684)
 * Colorado (645)
 * Nebraska (620)
 * Maryland (605)
 * South Carolina (534)
 * Mississippi (531)
 * Arizona (528)
 * Maine (485)
 * Oregon (481)
 * Connecticut (429)
 * New Mexico (427)
 * North Dakota (407)
 * Montana (404)
 * South Dakota (385)
 * Utah (346)
 * Idaho (320)
 * Vermont (308)
 * New Hampshire (281)
 * District Of Columbia (277)
 * Alaska (273)
 * Nevada (254)
 * Wyoming (195)
 * Hawaii (137)
 * Delaware (96)
 * Rhode Island (90)


COUNTY

 * Los Angeles (508)
 * Jefferson (459)
 * Washington (455)
 * Montgomery (389)
 * Orange (337)
 * Franklin (334)
 * Jackson (295)
 * District Of Columbia (277)
 * Wayne (252)
 * Marion (241)
 * Harris (239)
 * Clark (232)
 * Monroe (231)
 * Cook (223)
 * Polk (223)
 * Madison (215)
 * El Paso (211)
 * Lincoln (210)
 * Fayette (206)
 * Dallas (200)
 * Maricopa (197)
 * San Diego (182)
 * Hamilton (170)
 * Lake (169)
 * Middlesex (168)
 * Suffolk (166)
 * Greene (164)
 * Douglas (159)
 * Shelby (157)
 * Clay (154)
 * Essex (154)
 * Fulton (150)
 * New York (146)
 * Warren (142)
 * Erie (142)
 * Allegheny (142)
 * Johnson (139)
 * Union (139)
 * Carroll (135)
 * Grant (133)
 * Hillsborough (133)
 * Lancaster (133)
 * Sacramento (132)
 * Cumberland (131)
 * Lee (130)
 * Knox (130)
 * Delaware (130)
 * Miami-Dade (126)
 * King (121)
 * York (121)


UNDERSTANDING ZIP CODES IN THE UNITED STATES

ZIP Codes are a system of postal codes used by the United States Postal Service
(USPS) since 1963. The term ZIP stands for "Zone Improvement Plan," and the
basic idea was to improve the efficiency of mail delivery. ZIP Codes are
essential for sorting and delivering mail accurately and quickly across the vast
geography of the United States.


THE STRUCTURE OF ZIP CODES

A standard ZIP Code is composed of five digits. The first digit represents a
group of U.S. states, with numbers ranging from 0 in the Northeast to 9 in the
West. The second and third digits together represent a region in that group,
which can be a large city or a smaller group of towns. The fourth and fifth
digits designate a group of delivery addresses within that region.

In addition to the standard five-digit ZIP Code, there is also the ZIP+4 Code.
Introduced in 1983, the ZIP+4 Code includes the basic five digits followed by a
hyphen and four additional digits. These extra digits allow for more precise
delivery, identifying a specific building or apartment within a block.


IMPORTANCE OF ZIP CODES

ZIP Codes play a crucial role in the logistics of mail delivery, ensuring that
letters and packages reach their intended destinations efficiently. Beyond mail
delivery, ZIP Codes are used in various applications, including determining
sales tax rates, demographic analysis, and planning delivery routes for
businesses.

ZIP Codes are also used in marketing and advertising to target specific
geographic areas. Businesses can analyze ZIP Code data to understand the
demographics and preferences of potential customers in different regions.


HOW ZIP CODES ARE ASSIGNED

The assignment of ZIP Codes is managed by the USPS, and they are generally based
on the geographic location and population density. Urban areas tend to have more
ZIP Codes due to the higher concentration of addresses, while rural areas may
cover larger geographic regions with fewer ZIP Codes.

ZIP Codes can change over time as new areas are developed or as population
shifts occur. The USPS periodically updates ZIP Code boundaries to reflect these
changes, ensuring that the system remains efficient and effective.


INTERESTING FACTS ABOUT ZIP CODES

The lowest ZIP Code is 00501, which is assigned to the Internal Revenue Service
in Holtsville, New York. The highest ZIP Code is 99950, located in Ketchikan,
Alaska. These codes illustrate the range of ZIP Codes across the United States,
from the East Coast to the far reaches of Alaska.

Some ZIP Codes have become iconic, such as 90210, which is associated with
Beverly Hills, California, and gained fame through popular culture. ZIP Codes
can also be used to identify unique locations, such as military bases or
government facilities.




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UNITED STATES

 * Texas
 * California
 * Pennsylvania
 * New York
 * Illinois
 * Florida
 * Ohio
 * Virginia
 * Michigan
 * Missouri
 * North Carolina
 * Iowa
 * Minnesota
 * Indiana
 * Georgia
 * Kentucky
 * Wisconsin
 * West Virginia
 * Alabama
 * Tennessee


PLACE:

Washington | Apo Ae | Houston | New York | El Paso | Apo Aa | Dallas |
Springfield | Miami | Sacramento | Atlanta | Los Angeles | Philadelphia | Kansas
City | San Antonio | Chicago | Columbus | Austin | Charlotte | Phoenix |
Portland | Las Vegas | San Diego | Oklahoma City | Pittsburgh | Louisville |
Albany | Cincinnati | Denver | Minneapolis | Saint Louis | Birmingham |
Charleston | Memphis | Arlington | Madison | Cleveland | Indianapolis |
Jacksonville | Richmond | Rochester | Columbia | Lexington | Orlando | New
Orleans | Buffalo | Dayton | Fresno | San Jose | Seattle


COUNTY:

Los Angeles | Jefferson | Washington | Montgomery | Orange | Franklin | Jackson
| District Of Columbia | Wayne | Marion | Harris | Clark | Monroe | Cook | Polk
| Madison | El Paso | Lincoln | Fayette | Dallas | Maricopa | San Diego |
Hamilton | Lake | Middlesex | Suffolk | Greene | Douglas | Shelby | Clay | Essex
| Fulton | New York | Warren | Erie | Allegheny | Johnson | Union | Carroll |
Grant | Hillsborough | Lancaster | Sacramento | Cumberland | Lee | Knox |
Delaware | Miami-Dade | King | York

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