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
All states and U.S. territories
Maps and coordinates
County directory

Clinton County ZIP Codes

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

County State ZIP Code City Area Codes
Clinton County OH 45107 Blanchester 283, 326, 513, 937
Clinton County OH 45113 Clarksville 283, 326, 513, 937
Clinton County OH 45114 Cuba 326, 937
Clinton County OH 45138 Lees Creek 326, 937
Clinton County OH 45146 Martinsville 326, 937
Clinton County OH 45148 Midland 283, 326, 513, 937
Clinton County OH 45159 New Vienna 326, 937
Clinton County OH 45164 Port William 326, 937
Clinton County OH 45166 Reesville 326, 937
Clinton County OH 45169 Sabina 220, 326, 740, 937
Page 9 of 11

Geographic Map of Clinton County

Postal context

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.