Riverside County  is a county in Southern California which extends east into the California Desert.
The following Riverside County cities are in California's Desert:
The following Riverside County cities are in the Southern California region:
- The Riverside Airshow  is currently in its 14th year. It is one day only, but critics love it. In 2007, it will take place on March 31st  at the Riverside Airport, 6951 Flight Road, Riverside, CA 92504.
WikiPedia:Riverside County, California