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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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Clay County ZIP Codes

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

County State ZIP Code City Area Codes
Clay County NE 68944 Harvard 402, 531
Clay County NE 68954 Inland 402, 531
Clay County NE 68975 Saronville 402, 531
Clay County NE 68979 Sutton 402, 531
Clay County NE 68980 Trumbull 402, 531
Clay County SD 57010 Burbank 402, 531, 605
Clay County SD 57069 Vermillion 402, 531, 605
Clay County SD 57073 Wakonda 605
Clay County TN 38551 Celina 270, 364, 606, 931
Clay County TN 38575 Moss 270, 364, 615, 629, 931
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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.