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

Pennington County is found in the western part of South Dakota. This fantastic county is named after John L. Pennington (1829-1900), Governor of Dakota Territory. The population of Pennington County exceeds 112 thousand people. The county, formed in 1875, spans an area of 2776 square miles. The county seat of Pennington County is Rapid City. This map shows the borders of Pennington 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 Pennington County.