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
County directory

Marion County ZIP Codes

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

County State ZIP Code City Area Codes
Marion County MS 39643 Kokomo 601, 769
Marion County OH 43301 Marion 740
Marion County OH 43302 Marion 220, 419, 567, 740
Marion County OH 43306 Marion 740
Marion County OH 43307 Marion 740
Marion County OH 43314 Caledonia 220, 419, 567, 740
Marion County OH 43322 Green Camp 220, 740
Marion County OH 43332 La Rue 220, 326, 419, 567, 740, 937
Marion County OH 43335 Martel 419, 567
Marion County OH 43337 Morral 220, 419, 567, 740
Page 18 of 25

Geographic Map of Marion County

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.