This library of county documents, organized by department name, houses a wide variety of downloadable items including the Contra Costa general plan, fiscal documents, and performance reports.
County Codes & Ordinances
This listing includes all codified ordinances of Contra Costa County.
This library of interactive forms allows you to request services and information from the county as well as submit information about specific projects.
Maps, Map Library, & GIS
The map library consists of County maps that show information such as supervisory districts, county zoning, bike routes, and much more. The GIS team has developed an interactive map application for use on our web site. The goal of serving maps via a web browser is to provide you with easier access to county data.
Maps, Map Library, and GIS