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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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Butler County ZIP Codes

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

County State ZIP Code City Area Codes
Butler County OH 45044 Middletown 283, 513
Butler County OH 45050 Monroe 283, 513
Butler County OH 45053 Okeana 283, 513, 765, 812, 930
Butler County OH 45055 Overpeck 283, 513
Butler County OH 45056 Oxford 283, 513, 765
Butler County OH 45061 Ross 283, 513
Butler County OH 45062 Seven Mile 283, 513
Butler County OH 45063 Shandon 283, 513
Butler County OH 45064 Somerville 283, 326, 513, 937
Butler County OH 45067 Trenton 283, 513
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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.