Texas Map of California counties. Economy of California by county. Subcategories This category has the following 10 subcategories, out of 10 total. Companies based in California by county (53 C)L Economy of Lake County, California (4 C, 1 P) Economy of Los Angeles County, California (10 C)O Economy of Orange County, California (4 C, 1 P)R Economy of Riverside County, California (7 C, 2 P)S Economy of San Bernardino County, California (3 C, 1 P) Economy of San Diego County, California (5 C, 2 P) Economy of San Francisco (3 C, 17 P) Economy of Sonoma County, California (2 C, 1 P)V Economy of Ventura County, California (5 C, 4 P)