Riverside County on the map of California as of 2026. Cities, roads, borders and directions in Riverside County of California.

Riverside County is located in the Southeastern part of California. It is one of the biggest counties in the state in terms of population. The county seat is the city of Riverside. This map shows the borders of Riverside County as well as neighboring counties, including major highways and natural objecsts as of 2026. 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 Riverside County.