Fourth Congressional District

California's 4th congressional district is a U.S. congressional district in California. It consists of all of Lake and Napa County plus portions of Solano, Sonoma and Yolo counties. Cities in the district include Cotati, Rohnert Park, Santa Rosa, Sonoma, Napa, American Canyon, Clearlake, Lakeport, Davis, Winters, Woodland, Rio Vista, Dixon and parts of Vacaville.

Fourth Congressional District