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 99501 Anchorage Anchorage Municipality 907
AK 99502 Anchorage Anchorage Municipality 907
AK 99503 Anchorage Anchorage Municipality 907
AK 99504 Anchorage Anchorage Municipality 907
AK 99505 Jber Anchorage Municipality 907
AK 99506 Jber Anchorage Municipality 907
AK 99507 Anchorage Anchorage Municipality 907
AK 99508 Anchorage Anchorage Municipality 907
AK 99509 Anchorage Municipality of Anchorage 907
AK 99510 Anchorage North Slope 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.