contra costa county mapping center
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 Information

Contra Costa County provides free access to most of our GIS data via the internet. Note that GIS or CAD software on your computer is required to use these files. To download data you must first register.

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Main Catalog
Some of the layers available include: parcels, streets, zoning, general plan, census boundaries, city boundaries and supervisor districts. Click on Main Catalog to view the full list.

Policy & Fees
To foster cooperation between public agencies, we share most of our GIS data for free with public agencies and non-profit organizations. We continue to evaluate our data sharing policy and reserve the right to change this policy in the future.


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