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 81524 Loma Mesa County 970
CO 81525 Mack Mesa County 435, 970
CO 81526 Palisade Mesa County 970
CO 81527 Whitewater Mesa County 970
CO 81601 Glenwood Springs Garfield County 970
CO 81602 Glenwood Springs Garfield County 970
CO 81610 Dinosaur Moffat County 435, 970
CO 81611 Aspen Pitkin County 719, 970
CO 81612 Aspen Pitkin County 970
CO 81615 Snowmass Village Pitkin 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.