There are 311 Fitness & Training Services in Marin County, California, serving a population of 260,814 people in an area of 521 square miles. There is 1 Fitness & Training Service per 838 people, and 1 Fitness & Training Service per 1 square miles.
In California, Marin County is ranked 3rd of 58 counties in Fitness & Training Services per capita, and 9th of 58 counties in Fitness & Training Services per square mile.