Marin County is a county located in the U.S. state of California. As of the most recent data available, the county has a population of approximately 247,289 people, with a population density of about 475.56 persons per square mile.
The county spans a total land area of 520.00 square miles (1,347.00 square kilometers). The administrative center and county seat is San Rafael, which often serves as a hub for local governance and services. The largest city within the county by population is San Rafael.
Geographically, Marin County experiences varied elevations, with its highest point at Woodacre 351 ft and its lowest point at Ross 0 ft. The region operates in the UTC-8.