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2000. California. Metropolitan Transportation Commission. This polygon shapefile contains superdistrict boundaries and population statistics created by the Metropolitan Transportation Comission (MTC) using... California. Metropolitan Transportation Commission.
1999. Dept. of Public Works. Supervisorial districts for the City of San Francisco. This data include Treasure Island as part of Supervisor District 6. The data was created bas... San Francisco (Calif.). Department Of Telecommunications and Information Services.
2012. Department of Conservation & Development, Contra Costa County. This dataset represents the Supervisor Disricts within Contra Costa, California. Latest data revision occurred in November 2012; Data was mapped an...
2010. Humboldt County Community Development Services - Advance Planning Division. This polygonal dataset shows the boundaries for the 2010 Board of Supervisor Districts in Humboldt County, California. .
2011. Mono County (Calif.) -- Information Technology. This polygon dataset delineates the boundaries for all supervisoral districts within Mono County, California for 2011. Provides population and raci...
2014. Placer County (Calif.) -- Community Development Resource Agency. This polygonal dataset shows the extents of supervisor districts within Placer County, California for 2014.
2019. Riverside County (Calif.). Geographic Information Services. This data set of polygon features represents Riverside County's Supervisorial districts. These data are made available as a public service. The dat... Riverside County (Calif.). Geographic Information Services.
2007. Sacramento County (Calif.) -- Department of Technology. This polygonal dataset shows the boundaries for County Board of Supervisor Districts in Sacramento County, California for 2007.
2016. San Benito County (Calif.) -- Information Technology. This polygon dataset shows the boundaries for all supervisoral election districts in San Benito County, California for 2016.
2011. Shasta County (Calif.). This polygon dataset represents Shasta County, California Supervisorial District boundaries approved by the Shasta County Board of Supervisors on S...