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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.

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Mercer County ZIP Codes

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

County State ZIP Code City Area Codes
Mercer County OH 45310 Burkettsville 326, 419, 567, 937
Mercer County OH 45822 Celina 260, 419, 567
Mercer County OH 45826 Chickasaw 419, 567
Mercer County OH 45828 Coldwater 419, 567
Mercer County OH 45846 Fort Recovery 260, 326, 419, 567, 937
Mercer County OH 45860 Maria Stein 419, 567
Mercer County OH 45862 Mendon 419, 567
Mercer County OH 45866 Montezuma 419, 567
Mercer County OH 45882 Rockford 260, 419, 567
Mercer County OH 45883 Saint Henry 419, 567
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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.