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
All states and U.S. territories
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State directory

Colorado ZIP Codes

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

State ZIP Code City County Area Codes
CO 80512 Bellvue Larimer County 970
CO 80513 Berthoud Larimer County 303, 720, 970, 983
CO 80514 Dacono Weld County 303, 720, 983
CO 80515 Drake Larimer County 970
CO 80516 Erie Weld County 303, 720, 983
CO 80517 Estes Park Larimer County 303, 720, 970, 983
CO 80520 Firestone Weld County 303, 720, 983
CO 80521 Fort Collins Larimer County 970
CO 80522 Fort Collins Larimer County 970
CO 80523 Fort Collins Larimer County 970
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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.