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 99740 Fort Yukon Yukon-Koyukuk Census Area 907
AK 99741 Galena Yukon-Koyukuk Census Area 907
AK 99742 Gambell Nome Census Area 907
AK 99743 Healy Denali Borough 907
AK 99744 Anderson Denali Borough 907
AK 99745 Hughes Yukon-Koyukuk Census Area 907
AK 99746 Huslia Yukon-Koyukuk Census Area 907
AK 99747 Kaktovik North Slope Borough 907
AK 99748 Kaltag Yukon-Koyukuk Census Area 907
AK 99749 Kiana Northwest Arctic 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.