Find California county and township maps.
Sonoma County, California
Find your California County by searching for your address, or by clicking on the map.
Sonoma County, California Map
An detailed map of Sonoma 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 Sonoma County, California
Sonoma County is located in the U.S. state of California. As of the 2020 United States Census, its population was 488,863. Its seat of government and largest city is Santa Rosa. It is to the north of Marin County and the south of Mendocino County. It is west of Napa and Lake Counties.
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.