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 80133 Palmer Lake El Paso County 303, 719, 720, 983
CO 80134 Parker Douglas County 303, 720, 983
CO 80135 Sedalia Douglas County 303, 719, 720, 983
CO 80136 Strasburg Adams County 303, 720, 983
CO 80137 Watkins Arapahoe County 303, 720, 983
CO 80138 Parker Douglas County 303, 720, 983
CO 80150 Englewood Arapahoe County 303
CO 80151 Englewood Arapahoe County 303
CO 80155 Englewood Arapahoe County 303
CO 80160 Littleton Arapahoe County 303
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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.