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

Dewey County is located in the northern part of South Dakota. This well known county is named after William P. Dewey, territorial surveyor-general. The county seat of Dewey County is Timber Lake. The county's area is about 2303 square miles. Founded in 1873, today Dewey County is home to 5 thousand residents. This map shows the borders of Dewey 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 Dewey County.