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
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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 99559 Bethel Bethel Census Area 907
AK 99561 Chefornak Bethel Census Area 907
AK 99563 Chevak Kusilvak Census Area 907
AK 99564 Chignik Lake and Peninsula Borough 907
AK 99565 Chignik Lagoon Lake and Peninsula Borough 907
AK 99566 Chitina Copper River Census Area 867, 907
AK 99567 Chugiak Anchorage Municipality 907
AK 99568 Clam Gulch Kenai Peninsula Borough 907
AK 99569 Clarks Point Dillingham Census Area 907
AK 99571 Cold Bay Aleutians East Borough 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.