United States of America
- Custer, the county seat of Custer County, South Dakota
- Custer, County Antrim township, Michigan
- Custer, a township in Mason County, Michigan
- Custer, township of Sanilac County, Michigan
- Custer, a township in Mason County, Michigan
- Custer, census-designated place in Yellowstone County, Montana
- Custer, census-designated place in Whatcom County, Washington