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 99549 Port Heiden Lake and Peninsula Borough 907
AK 99550 Port Lions Kodiak Island Borough 907
AK 99551 Akiachak Bethel Census Area 907
AK 99552 Akiak Bethel Census Area 907
AK 99553 Akutan Aleutians East Borough 907
AK 99554 Alakanuk Kusilvak Census Area 907
AK 99555 Aleknagik Dillingham Census Area 907
AK 99556 Anchor Point Kenai Peninsula Borough 907
AK 99557 Aniak Bethel Census Area 907
AK 99558 Anvik Yukon-Koyukuk 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.