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 81222 Coaldale Fremont County 719
CO 81223 Cotopaxi Fremont County 719
CO 81224 Crested Butte Gunnison County 970
CO 81225 Crested Butte Gunnison County 970
CO 81226 Florence Fremont County 719
CO 81227 Monarch Chaffee County 719
CO 81228 Granite Chaffee County 719
CO 81230 Gunnison Gunnison County 719, 970
CO 81231 Gunnison Gunnison County 970
CO 81232 Hillside Fremont County 719
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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.