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ZIP Code 57646 – Mound City, SD

Mound City, South Dakota · Campbell County · Central time

ZIP code57646
CityMound City
StateSouth Dakota
CountyCampbell County
Area code605
Population272
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area128.41 sq mi
Center (lat, long)45.6805, -100.0582

Map

Nearby ZIP codes

57632 Herreid · 10.6 mi57631 Glenham · 13.1 mi57452 Java · 14 mi57472 Selby · 17.6 mi57648 Pollock · 21.3 mi57437 Eureka · 22.2 mi57428 Bowdle · 24.2 mi57658 Wakpala · 24.3 mi

About ZIP 57646

ZIP code 57646 is assigned to Mound City, South Dakota. It lies in Campbell County. Its Census area covers about 128.41 square miles of land. The closest neighboring ZIP is 57632 (Herreid), about 10.6 miles away.

Every address in 57646 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources