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
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State directory

Ohio ZIP Codes

Complete postal directory, details, and geographic map for the State of Ohio.

State ZIP Code City County Area Codes
OH 43302 Marion Marion County 220, 419, 567, 740
OH 43306 Marion Marion County 740
OH 43307 Marion Marion County 740
OH 43310 Belle Center Logan County 326, 419, 567, 937
OH 43311 Bellefontaine Logan County 326, 937
OH 43314 Caledonia Marion County 220, 419, 567, 740
OH 43315 Cardington Morrow County 220, 419, 567, 740
OH 43316 Carey Wyandot County 419, 567
OH 43317 Chesterville Morrow County 419, 567
OH 43318 De Graff Logan County 326, 937
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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.