California County Maps
Find California county and township maps.
Marin County, California
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Marin County, California Map
An detailed map of Marin County. Click on a nearby County to view more information about that County.
Map of Counties in California
An interactive map of Counties in California. Click on a County to view more information about that County.
About Marin County, California
Marin County is located in the northwestern part of the San Francisco Bay Area of the U.S. state of California. As of the 2020 census, the population was 262,231. Its county seat and largest city is San Rafael. Marin County is across the Golden Gate Bridge from San Francisco, and is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
What is this?
This site has an interactive map of California Counties. Click on the map to find your California county, and view more details. You can also search for your address and use your GPS to find your California County.
Find what County you are in, and see official California County resources and information. Find any county in the United Stated, along with resources and links to official County websites. See a County map and local details. Looking for what county you are currently in? Find out on this map or use your device GPS to see what county you are in.