Mound City is a town in Campbell County, South Dakota, home to about 90 people across 0.1 square miles. Its ZIP code is 57646.
Mostly Mound City
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| Nearest major airport | Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP)336 miles away |
|---|---|
| Closer regional airport | Aberdeen Regional Airport (ABR)80 miles away |
| Nearest city of 250,000+ | Minneapolis, MN333 miles away |
| Nearest city of 1 million+ | Chicago, IL671 miles away |
Straight-line distances from the center of Mound City; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Mound City had 69 residents in the 2020 census, down 18% since 2000.
It’s the 312th largest of 440 towns in South Dakota by population.
Campbell County grew from 4,527 residents in 1900 to 1,377 in 2020.
Campbell County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 4°F. About 19.2 inches of rain and melted snow fall in a typical year, with about 33 inches of snow.
Source: NOAA 1991–2020 climate normals, Selby, SD weather station (12 miles away).
309 jobs at 56 businesses in Campbell County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.