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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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Callaway County ZIP Codes

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

County State ZIP Code City Area Codes
Callaway County MO 63388 Williamsburg 573
Callaway County MO 65043 Holts Summit 573
Callaway County MO 65059 Mokane 573
Callaway County MO 65063 New Bloomfield 573
Callaway County MO 65067 Portland 573
Callaway County MO 65077 Steedman 573
Callaway County MO 65080 Tebbetts 573
Callaway County MO 65231 Auxvasse 573
Callaway County MO 65251 Fulton 573
Callaway County MO 65262 Kingdom City 573

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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.