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The Contra Costa County Board of Supervisors is the governing body for the unincorporated areas of Contra Costa County, California in the San Francisco Bay Area's East Bay region. These are divided into five districts. The current board members are John Gioia (District 1), Gayle Uilkema (District 2), Mary Piepho (District 3), Karen Mitchoff (District 4), and the chair Federal Glover (District 5).
- ^ a b "Contra Costa County - Board of Supervisors website". Retrieved 2008-05-20.