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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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Ross County ZIP Codes

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

County State ZIP Code City Area Codes
Ross County OH 45628 Frankfort 220, 326, 740, 937
Ross County OH 45633 Hallsville 740
Ross County OH 45644 Kingston 220, 740
Ross County OH 45647 Londonderry 220, 740
Ross County OH 45673 Richmond Dale 220, 740
Ross County OH 45681 South Salem 220, 326, 740, 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.