The Marin County Public Works maintains over 420 miles of road in unincorporated areas of Marin. To learn about the various jurisdictions in Marin, please see our jurisdiction resource page. To learn about the different types of roads in Marin, such as County-maintained, non-county maintained, private roads and paper roads, please see our Roads in Marin page. Additionally, you can contact the Marin County Public Works Land Development office at (415) 499-3755.