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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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Monroe County ZIP Codes

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

County State ZIP Code City Area Codes
Monroe County WI 54649 Oakdale 608
Monroe County WI 54656 Sparta 534, 608, 715
Monroe County WI 54660 Tomah 608
Monroe County WI 54662 Tunnel City 608
Monroe County WI 54666 Warrens 534, 608, 715
Monroe County WI 54670 Wilton 608
Monroe County WV 24918 Ballard 304, 681
Monroe County WV 24941 Gap Mills 304, 540, 681, 826
Monroe County WV 24945 Greenville 304, 681
Monroe County WV 24951 Lindside 304, 540, 681, 826
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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.