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
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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 45638 Ironton Lawrence County 220, 606, 740
OH 45640 Jackson Jackson County 220, 740
OH 45642 Jasper Pike County 220, 740
OH 45643 Kerr Gallia County 740
OH 45644 Kingston Ross County 220, 740
OH 45645 Kitts Hill Lawrence County 220, 740
OH 45646 Latham Pike County 220, 326, 740, 937
OH 45647 Londonderry Ross County 220, 740
OH 45648 Lucasville Scioto County 220, 740
OH 45650 Lynx Adams 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.