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
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 45826 Chickasaw Mercer County 419, 567
OH 45827 Cloverdale Putnam County 419, 567
OH 45828 Coldwater Mercer County 419, 567
OH 45830 Columbus Grove Putnam County 419, 567
OH 45831 Continental Putnam County 419, 567
OH 45832 Convoy Van Wert County 260, 419, 567
OH 45833 Delphos Allen County 419, 567
OH 45835 Dola Hardin County 419, 567
OH 45836 Dunkirk Hardin County 419, 567
OH 45837 Dupont Putnam County 419
Page 139 of 145

Geographic Map of Ohio

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.