Lower Brule () is a census-designated place (CDP) in Lyman County, South Dakota, United States. The population was 703 at the 2020 census. The community is located within the Lower Brule Indian Reservation, from which it takes its name.

Geography

Lower Brule is located in northeastern Lyman County on the west side of Lake Sharpe, a reservoir on the Missouri River.

According to the United States Census Bureau, the CDP has a total area of , all land.

The reservation has a boat landing north of the city where walleyes and other fish can be caught. The local Indian tribe allows non-tribal members to hunt and fish within their reservation boundaries, and there is an abundance of upland game birds to hunt during the fall.

The Lower Brule Sioux tribe operates a popcorn packaging business, and the casino in the community is called the Golden Buffalo.

Demographics

As of the census