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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.

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Calloway County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Calloway County.

County State ZIP Code City Area Codes
Calloway County KY 42020 Almo 270, 364
Calloway County KY 42036 Dexter 270, 364
Calloway County KY 42049 Hazel 270, 364, 731
Calloway County KY 42054 Kirksey 270, 364
Calloway County KY 42071 Murray 270, 364, 931
Calloway County KY 42076 New Concord 270, 364, 731, 931

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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.