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	81646	Molina	Mesa County	`970`
CO	81647	New Castle	Garfield County	`970`
CO	81648	Rangely	Rio Blanco County	`435, 970`
CO	81649	Red Cliff	Eagle County	`719, 970`
CO	81650	Rifle	Garfield County	`970`
CO	81652	Silt	Garfield County	`970`
CO	81653	Slater	Routt County	`307, 970`
CO	81654	Snowmass	Pitkin County	`970`
CO	81655	Wolcott	Eagle County	`970`
CO	81656	Woody Creek	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.