United 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

State	ISO code	ZIP codes (Range)	Count
Alabama	AL	35004 to 36925	656
Alaska	AK	99501 to 99929	245
American Samoa	AS	96799 to 96799	1
Arizona	AZ	85003 to 86556	417
Arkansas	AR	71601 to 72959	615
California	CA	90001 to 96161	1802
Colorado	CO	80002 to 81657	527
Connecticut	CT	06001 to 06907	288
Delaware	DE	19701 to 19980	68
District of Columbia	DC	20001 to 20591	57
Florida	FL	32003 to 34997	1011
Georgia	GA	30002 to 39897	751
Guam	GU	96910 to 96929	7
Hawaii	HI	96701 to 96863	97
Idaho	ID	83201 to 83876	279
Illinois	IL	60002 to 62999	1396
Indiana	IN	46001 to 47997	807
Iowa	IA	50001 to 52807	970
Kansas	KS	66002 to 67954	704
Kentucky	KY	40003 to 42788	780
Louisiana	LA	70001 to 71497	539
Maine	ME	03901 to 04992	426
Maryland	MD	20601 to 21930	477
Massachusetts	MA	01001 to 02791	539
Michigan	MI	48001 to 49971	992
Minnesota	MN	55001 to 56763	881
Mississippi	MS	38601 to 39776	427
Missouri	MO	63005 to 65897	1035
Montana	MT	59001 to 59937	369
Nebraska	NE	68001 to 69367	586
Nevada	NV	89001 to 89883	181
New Hampshire	NH	03031 to 03897	247
New Jersey	NJ	07001 to 08904	598
New Mexico	NM	87001 to 88439	371
New York	NY	06390 to 14905	1826
North Carolina	NC	27006 to 28909	853
North Dakota	ND	58001 to 58856	388
Northern Mariana Islands	MP	96950 to 96952	3
Ohio	OH	43001 to 45899	1233
Oklahoma	OK	73001 to 74966	664
Oregon	OR	97001 to 97920	427
Pennsylvania	PA	15001 to 19611	1833
Rhode Island	RI	02802 to 02921	81
South Carolina	SC	29001 to 29945	424
South Dakota	SD	57001 to 57799	375
Tennessee	TN	37010 to 38589	636
Texas	TX	73960 to 79938	1990
Utah	UT	84001 to 84790	298
Vermont	VT	05001 to 05907	265
Virginia	VA	20105 to 24657	903
Washington	WA	98001 to 99403	605
West Virginia	WV	24701 to 26886	738
Wisconsin	WI	53001 to 54986	783
Wyoming	WY	82001 to 83414	179

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.