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 99770 Selawik Northwest Arctic Borough 907
AK 99771 Shaktoolik Nome Census Area 907
AK 99772 Shishmaref Nome Census Area 907
AK 99773 Shungnak Northwest Arctic Borough 907
AK 99774 Stevens Village Yukon-Koyukuk Census Area 907
AK 99775 Fairbanks Fairbanks North Star Borough 907
AK 99776 Tanacross Southeast Fairbanks Census Area 907
AK 99777 Tanana Yukon-Koyukuk Census Area 907
AK 99778 Teller Nome Census Area 907
AK 99779 Tok Southeast Fairbanks 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.