U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
All states and U.S. territories
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State directory

Alaska ZIP Codes

Complete postal directory, details, and geographic map for the State of Alaska.

State ZIP Code City County Area Codes
AK 99572 Cooper Landing Kenai Peninsula Borough 907
AK 99573 Copper Center Copper River Census Area 907
AK 99574 Cordova Chugach Census Area 907
AK 99575 Crooked Creek Bethel Census Area 907
AK 99576 Dillingham Dillingham Census Area 907
AK 99577 Eagle River Anchorage Municipality 907
AK 99578 Eek Bethel Census Area 907
AK 99579 Egegik Lake and Peninsula Borough 907
AK 99580 Ekwok Dillingham Census Area 907
AK 99581 Emmonak Kusilvak Census Area 907
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.