Codington County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 28,325, making it the 7th most populous county in South Dakota. Its county seat is Watertown. The county was created in 1877 and organized in 1878. It is named for Rev. George S. S. Codington, Dakota Territory legislator.
codington county is a county in the us state of south dakota as of the 2020 census the population was 28325 making it the 7th most populous county in south dakota its county seat is watertown the county was created in 1877 and organized in 1878 it is named for rev george s s codington dakota territory legislator