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 43343 Quincy Logan County 326, 937
OH 43344 Richwood Union County 220, 326, 740, 937
OH 43345 Ridgeway Hardin County 326, 937
OH 43346 Roundhead Hardin County 326, 419, 567, 937
OH 43347 Rushsylvania Logan County 326, 419, 567, 937
OH 43348 Russells Point Logan County 326, 937
OH 43349 Shauck Morrow County 419
OH 43350 Sparta Morrow County 220, 419, 567, 740
OH 43351 Upper Sandusky Wyandot County 220, 419, 567, 740
OH 43356 Waldo Marion County 220, 419, 567, 740
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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.