Marin County on the map of California as of 2025. Cities, roads, borders and directions in Marin County of California.

Marin County is a General Law county situated on the Pacific coast in central California. This excellent county was founded back in 1850. The county's total area is 520 square miles. The county is home to 260 thousand people. The county seat of Marin County is San Rafael. This map shows the borders of Marin County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Marin County.