Millbrook Colony, South Dakota
Millbrook Colony is a Hutterite colony and census-designated place (CDP) in Hanson County, South Dakota, United States. The population was 98 at the 2020 census. It was first listed as a CDP prior to the 2020 census. It is in the western part of the county,  by road west-northwest of Alexandria, the county seat, and  east-southeast of Mitchell. Demographics

References 

Census-designated places in Hanson County, South Dakota
Census-designated places in South Dakota
Hutterite communities in the United States