Platte Colony, South Dakota

Platte Colony is a Hutterite colony and census-designated place (CDP) in Charles Mix County, South Dakota, United States. It was first listed as a CDP prior to the 2020 census. The population of the CDP was 299 at the 2020 census.

It is in the northwest corner of the county, 20 mi northwest of Platte, the nearest incorporated place. It is 2 mi northeast of Lake Francis Case, a reservoir on the Missouri River.