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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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Adams County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Adams County.

County State ZIP Code City Area Codes
Adams County CO 80229 Denver 303, 720, 983
Adams County CO 80233 Denver 303, 720, 983
Adams County CO 80234 Denver 303, 720, 983
Adams County CO 80241 Thornton 303, 720, 983
Adams County CO 80260 Denver 303, 720, 983
Adams County CO 80601 Brighton 303, 720, 983
Adams County CO 80602 Brighton 303, 720, 983
Adams County CO 80614 Eastlake 303
Adams County CO 80640 Henderson 303, 720, 983
Adams County IA 50839 Carbon 641
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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.