There are 334 Car Washes in San Diego County, California, serving a population of 3,283,665 people in an area of 4,206 square miles. There is 1 Car Wash per 9,831 people, and 1 Car Wash per 12 square miles.
In California, San Diego County is ranked 20th of 58 counties in Car Washes per capita, and 8th of 58 counties in Car Washes per square mile.