There are 157 Banks & Credit Unions in Marin County, California, serving a population of 260,814 people in an area of 521 square miles. There is 1 Bank & Credit Union per 1,661 people, and 1 Bank & Credit Union per 3 square miles.
In California, Marin County is ranked 3rd of 58 counties in Banks & Credit Unions per capita, and 9th of 58 counties in Banks & Credit Unions per square mile.