Grant County

Also known as Grant County, South Dakota, Grant County, SD

county in South Dakota, United States of America

Key facts

Country: United States
State: South Dakota
Founded: 1873 (created), January 8, 1878 (organized)
Named after: Ulysses S. Grant
Seat: Milbank
Largest city: Milbank
Total: 688 sq mi (1,780 km )
Land: 681 sq mi (1,760 km )
Water: 6.1 sq mi (16 km ) 0.9%
Estimate 2025: 7,534
Density: 11.1/sq mi (4.28/km )
Time zone: UTC−6 ( Central )
Summer dst

Article

Grant County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 7,556. The county seat is Milbank. The county was founded in 1873 and organized in 1878. It is named for Ulysses S. Grant, 18th President of the United States.

Geography