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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.

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Aleutians West Census Area ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Aleutians West Census Area.

County State ZIP Code City Area Codes
Aleutians West Census Area AK 99546 Adak 907
Aleutians West Census Area AK 99547 Atka 907
Aleutians West Census Area AK 99591 Saint George Island 907
Aleutians West Census Area AK 99638 Nikolski 907
Aleutians West Census Area AK 99660 Saint Paul Island 907
Aleutians West Census Area AK 99685 Unalaska 907
Aleutians West Census Area AK 99692 Dutch Harbor 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.