2011 California State Senate Districts clipped to the LA County Boundary.

The DCFS Office Service Areas shape file (as of July 1, 2009) was derived from the LA County ZIP Codes from the County Registrar’s Office. The service areas data are used by the 18 DCFS Regional Offices to provide services and resources to the children and families of the different geographic areas of LA County.

Boundary of the County of Los Angeles

Park planning areas are used to assist in calculating park fees for sub dividers in accordance with Los Angeles County Code, Title 21.

Regional Center administrative boundaries for LA County. These centers serve individuals with development disabilities and their families (see http://www.dds.ca.gov/RC/RCList.cfm for more information).

Service Planning Areas (SPAs) are used by a number of County departments (Public Health, Health Services and Mental Health) to plan and manage service delivery across the County. SPAs are aggregated from Census Tracts in order to connect them to demographic information.
The SPAs in this dataset are based upon 2010 Census Tracts and were created in 2012.