ZIP Code 57571
About Saint Charles
St. Charles or Saint Charles is a census-designated place (CDP) in Gregory County, South Dakota, United States. The population was 15 at the 2020 census.
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Area Profile
US Census (ACS 5-year · Gazetteer)
39
population
4
people / sq mi
$72,500
median home value
58.8
median age
38
housing units
21
households
10.5
land area (sq mi)