Marin County GIS Portal

Search for Marin County CA GIS maps. A GIS map search can provide information like county maps, town maps, city maps, local maps, property maps, parcel maps, plat maps, public property, property tax assessments, flood zones, zoning boundaries, geographic information, historical maps, and property tax information.


Marin County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Marin County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Marin County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Marin County California. These maps can also include place names, bodies of water, flood zones, property zones, and other geographic information. Some Assessors may keep historic GIS maps that include historic property tax assessments. These maps may be available on the Marin County Assessor Office website.

Marin County Assessor's Office San Rafael CA 3501 Civic Center Drive 94903 415-473-7215


Marin County Town and City Halls provide municipal services for their town or city, including preserving vital records and maintaining records on their jurisdiction such as Marin County GIS maps. The GIS maps at a Marin County Town or City Hall can include property boundaries, public property, unclaimed parcels, and roads, as well as appraisal values for properties and property tax assessments in Marin County California. These GIS maps may also show population information, place names, zoning boundaries, bodies of water, flood zones, and other geographic information. Some Town and City Halls also have historical maps of their area. These maps are often available to the public on the Marin County Town and City Hall website.

Corte Madera Town Hall Corte Madera CA 300 Tamalpais Drive 94925 415-927-6725

Fairfax Town Hall Fairfax CA 142 Bolinas Rd 94930 415-453-1584

Larkspur City Hall Larkspur CA 400 Magnolia Avenue 94939 415-927-5110

Mill Valley City Hall Mill Valley CA 26 Corte Madera Avenue 94941 415-388-4033

Novato City Hall Novato CA 75 Rowland Way 94945 415-897-4311

Ross Town Hall Ross CA 31 Sir Francis Drake Boulevard 94957 415-453-1453

San Anselmo Town Hall San Anselmo CA 525 San Anselmo Avenue 94960 415-258-4600

San Rafael City Hall San Rafael CA 1400 5th Ave 94901 415-485-3407

Sausalito City Hall Sausalito CA 420 Litho Street 94965 415-289-4100

Tiburon Town Hall Belvedere CA 1505 Tiburon Boulevard 94920 415-435-7373


Marin County Clerk Offices maintain public records for a county or local government, which includes GIS maps. These maps provide detailed information on the area, including Marin County property maps that show boundaries, public property, property divisions, and in some cases, population information in Marin County California. They may also include property value assessments and property tax rates. Marin County GIS maps can show place names, bodies of water, zoning information, flood zones, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations, and these maps are often available online through the Clerk Office website.

Marin County Clerk San Rafael CA 3501 Civic Center Drive 94903 415-473-7215

Mill Valley City Clerk Mill Valley CA 26 Corte Madera Avenue 94941 415-388-4033

Novato City Clerk Novato CA 75 Rowland Way 94945 415-899-8280

San Rafael City Clerk San Rafael CA 1400 5th Avenue 94901 415-485-3070


Marin County Recorders of Deeds keep real estate records to ensure the accuracy of property and land records. In addition to deeds, Recorders of Deeds also have detailed county and local maps, including Marin County GIS maps that show property lines, building information, public property, unclaimed parcels, as well as property value assessments and property tax information. These GIS maps may also include place names, zoning boundaries, bodies of water, flood zones, and other geographic information in Marin County California. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Marin County Recorder of Deeds website.

Marin County Recorder of Deeds San Rafael CA PO Box C 94913 415-473-6092