Sully County on the map of South Dakota 2024. Cities, roads, borders and directions in Sully County of South Dakota.

Sully County is situated in the central area of South Dakota. This famous county is named after Fort Sully, itself named after General Alfred Sully. The area of Sully County is about 1007 square miles. This county, created in 1873, is populated today by 1 thousand residents. Onida is the county seat of Sully County. This map shows the borders of Sully County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Sully County.