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

Colorado ZIP Codes

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

State ZIP Code City County Area Codes
CO 81321 Cortez Montezuma County 970
CO 81323 Dolores Montezuma County 970
CO 81324 Dove Creek Dolores County 435, 970
CO 81325 Egnar San Miguel County 435, 970
CO 81326 Hesperus La Plata County 505, 970
CO 81327 Lewis Montezuma County 970
CO 81328 Mancos Montezuma County 970
CO 81329 Marvel La Plata County 970
CO 81330 Mesa Verde National Park Montezuma County 970
CO 81331 Pleasant View Montezuma County 435, 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.