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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Alaska ZIP Codes

Complete postal directory, details, and geographic map for the State of Alaska.

State ZIP Code City County Area Codes
AK 99826 Gustavus Hoonah-Angoon Census Area 907
AK 99827 Haines Haines Borough 236, 250, 672, 778, 907
AK 99829 Hoonah Hoonah-Angoon Census Area 907
AK 99830 Kake Prince of Wales-Hyder Census Area 907
AK 99832 Pelican Hoonah-Angoon Census Area 907
AK 99833 Petersburg Petersburg Borough 236, 250, 672, 778, 907
AK 99835 Sitka Sitka City and Borough 907
AK 99836 Port Alexander Prince of Wales-Hyder Census Area 907
AK 99840 Skagway Skagway Municipality 236, 250, 672, 778, 907
AK 99841 Tenakee Springs Hoonah-Angoon 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.