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 99511 Anchorage Municipality of Anchorage 907
AK 99513 Anchorage Anchorage Municipality 907
AK 99514 Anchorage Municipality of Anchorage 907
AK 99515 Anchorage Anchorage Municipality 907
AK 99516 Anchorage Anchorage Municipality 907
AK 99517 Anchorage Anchorage Municipality 907
AK 99518 Anchorage Anchorage Municipality 907
AK 99519 Anchorage North Slope Borough 907
AK 99520 Anchorage Municipality of Anchorage 907
AK 99521 Anchorage Municipality of Anchorage 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.