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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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Carter County ZIP Codes

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

County State ZIP Code City Area Codes
Carter County MO 63943 Grandin 573
Carter County MO 63965 Van Buren 573
Carter County MT 59311 Alzada 307, 406
Carter County MT 59316 Boyes 406
Carter County MT 59319 Capitol 406, 605
Carter County MT 59324 Ekalaka 406, 605
Carter County MT 59332 Hammond 406
Carter County OK 73401 Ardmore 580
Carter County OK 73402 Ardmore 580
Carter County OK 73403 Ardmore 580
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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.