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 99583 False Pass Aleutians East Borough 907
AK 99585 Marshall Kusilvak Census Area 907
AK 99586 Gakona Copper River Census Area 907
AK 99587 Girdwood Anchorage Municipality 907
AK 99588 Glennallen Copper River Census Area 907
AK 99589 Goodnews Bay Bethel Census Area 907
AK 99590 Grayling Yukon-Koyukuk Census Area 907
AK 99591 Saint George Island Aleutians West Census Area 907
AK 99599 Anchorage Municipality of Anchorage 907
AK 99602 Holy Cross Yukon-Koyukuk 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.