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 99636 New Stuyahok Dillingham Census Area 907
AK 99637 Toksook Bay Bethel Census Area 907
AK 99638 Nikolski Aleutians West Census Area 907
AK 99639 Ninilchik Kenai Peninsula Borough 907
AK 99640 Nondalton Lake and Peninsula Borough 907
AK 99641 Nunapitchuk Bethel Census Area 907
AK 99643 Old Harbor Kodiak Island Borough 907
AK 99644 Ouzinkie Kodiak Island Borough 907
AK 99645 Palmer Matanuska-Susitna Borough 907
AK 99647 Pedro Bay Lake and Peninsula Borough 907
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Geographic Map of Alaska

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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.