St. Charles is a community in Gregory County, South Dakota, home to about 6 people across 0.2 square miles. Its ZIP code is 57571.
Mostly St. Charles
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| Nearest major airport | Eppley Airfield (OMA)205 miles away |
|---|---|
| Closer regional airport | Pierre Regional Airport (PIR)108 miles away |
| Nearest city of 250,000+ | Omaha, NE200 miles away |
| Nearest city of 1 million+ | Chicago, IL587 miles away |
Straight-line distances from the center of St. Charles; 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.
St. Charles had 15 residents in the 2020 census, down 21% since 2000.
It’s the 430th largest of 440 towns in South Dakota by population.
Gregory County grew from 2,211 residents in 1900 to 3,994 in 2020.
Gregory County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 11°F. About 25.9 inches of rain and melted snow fall in a typical year, with about 37 inches of snow.
Source: NOAA 1991–2020 climate normals, Bonesteel, SD weather station (7 miles away).
1,194 jobs at 180 businesses in Gregory 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.