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GIS Data Download: Information and Instructions

Data in shape file format is grouped under categories and listed in Alphabetical order.
Click on the plus sign (+) to open a category folder.
All data are in California State Plane coordinates, NAD83 HARN, US Survey feet.
Files have been compressed into zip files to reduce their size - unzip to restore.
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Contact Nancy Carpenter in the Marin County Assessor's Office for parcel attributes related to the annual assessment roll, including property owner names and mailing addresses.
Phone = 415-473-7228; email = ncarpenter@marincounty.org

California Public Records Act

Users are encouraged to use the our cloud based open data portal   to download data in various formats.
  CLICK HERE

GIS Data List
Click on the plus/minus signs to expand/collapse the different categories .  
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If you can't find it above use the data browser

If you cannot find it in the list above , try using the data browser  which list ALL data in the directories... Zip files and meta data

Data Browser