There are 556 Day Spas in San Diego County, California, serving a population of 3,283,665 people in an area of 4,206 square miles. There is 1 Day Spa per 5,905 people, and 1 Day Spa per 7 square miles.
In California, San Diego County is ranked 10th of 58 counties in Day Spas per capita, and 9th of 58 counties in Day Spas per square mile.