United States FlagUnited States ZIP Codes

A comprehensive list of ZIP codes in the United States by States and an interactive map with address lookup tool for instant ZIP code retrieval.

ZIP codes, or Zone Improvement Plan codes, are a vital component of the United States postal system, facilitating the efficient sorting and delivery of mail across the nation. Introduced in 1963, ZIP codes have become ingrained in American culture and infrastructure, serving as identifiers for specific geographic areas. This comprehensive system has a rich history and has undergone various developments since its inception, reflecting the evolving needs of the postal service and society at large. From their format to implementation, ZIP codes play a crucial role in streamlining mail delivery and organizing the vast geographical expanse of the United States.

To find a comprehensive list of ZIP codes in United States, please refer to the table below or click on any location on the Interactive map to instantly find the postal code and address for your mail's destination:

List of ZIP codes in United States

StateISO codeZIP codes (Range)Count
AlabamaAL35004 to 36925656
AlaskaAK99501 to 99929245
American SamoaAS96799 to 967991
ArizonaAZ85003 to 86556417
ArkansasAR71601 to 72959615
CaliforniaCA90001 to 961611802
ColoradoCO80002 to 81657527
ConnecticutCT06001 to 06907288
DelawareDE19701 to 1998068
District of ColumbiaDC20001 to 2059157
FloridaFL32003 to 349971011
GeorgiaGA30002 to 39897751
GuamGU96910 to 969297
HawaiiHI96701 to 9686397
IdahoID83201 to 83876279
IllinoisIL60002 to 629991396
IndianaIN46001 to 47997807
IowaIA50001 to 52807970
KansasKS66002 to 67954704
KentuckyKY40003 to 42788780
LouisianaLA70001 to 71497539
MaineME03901 to 04992426
MarylandMD20601 to 21930477
MassachusettsMA01001 to 02791539
MichiganMI48001 to 49971992
MinnesotaMN55001 to 56763881
MississippiMS38601 to 39776427
MissouriMO63005 to 658971035
MontanaMT59001 to 59937369
NebraskaNE68001 to 69367586
NevadaNV89001 to 89883181
New HampshireNH03031 to 03897247
New JerseyNJ07001 to 08904598
New MexicoNM87001 to 88439371
New YorkNY06390 to 149051826
North CarolinaNC27006 to 28909853
North DakotaND58001 to 58856388
Northern Mariana IslandsMP96950 to 969523
OhioOH43001 to 458991233
OklahomaOK73001 to 74966664
OregonOR97001 to 97920427
PennsylvaniaPA15001 to 196111833
Rhode IslandRI02802 to 0292181
South CarolinaSC29001 to 29945424
South DakotaSD57001 to 57799375
TennesseeTN37010 to 38589636
TexasTX73960 to 799381990
UtahUT84001 to 84790298
VermontVT05001 to 05907265
VirginiaVA20105 to 24657903
WashingtonWA98001 to 99403605
West VirginiaWV24701 to 26886738
WisconsinWI53001 to 54986783
WyomingWY82001 to 83414179

Interactive Map of United States ZIP codes

Interactive ZIP code lookup Map: Simply click on any location on the map to instantly reveal its ZIP code and address details. For a more immersive experience, engage Fullscreen mode to maximize your exploration capabilities and enable smooth navigation with scroll gestures.

Format of United States ZIP Codes

ZIP codes in the United States consist of five numerical digits, providing a unique identifier for specific geographic areas. This section outlines the structure of ZIP codes and their extensions.

ZIP codes are structured to progressively narrow down the location, starting from broader regions and culminating in precise locales. The first digit represents a group of U.S. states, with subsequent digits refining the area further, from regional zones to specific neighborhoods or delivery routes. Additionally, ZIP+4 codes extend the basic five-digit format by adding four additional digits, enhancing accuracy in mail delivery by pinpointing addresses with greater precision.

History of United States ZIP Codes

The concept of ZIP codes emerged from the need to modernize and streamline mail delivery processes in the United States. This section discusses the origins of ZIP codes, the challenges in mail distribution prior to their introduction, and the development of the ZIP code system by the United States Postal Service (USPS).

In 1963, after years of planning and research, the USPS officially launched the ZIP code system. The initiative aimed to assign unique codes to every area in the country, enabling automated sorting machines to categorize mail based on these identifiers. This marked a significant technological advancement in mail handling, revolutionizing the efficiency and accuracy of the postal service.

Implementation of United States ZIP Code

The implementation of ZIP codes involved a comprehensive nationwide effort to assign unique codes to every addressable area in the United States. This section discusses the process of implementing ZIP codes, including the planning, coordination, and collaboration required between the USPS, government agencies, and local communities.

The process began with the division of the country into geographic regions based on population density and mail volume. Teams of postal workers, assisted by advanced sorting equipment, systematically assigned codes to individual addresses, ensuring comprehensive coverage and accuracy. The section also covers the public awareness campaign launched by the USPS to educate citizens about the benefits of ZIP codes and encourage their adoption.

Despite initial challenges, the implementation of ZIP codes was largely successful, ushering in a new era of efficiency and reliability in mail delivery.

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