This layer shows all incorporated and unincorporated areas of Los Angeles County.  The incorporated city boundaries are maintained by the Department of Public Works as part of the cadastral landbase, and reflects the most current annexations as of the date listed below.  The unincorporated areas are maintained by the Department of Regional Planning (aka LA County Planning) for land use planning efforts.  This is especially important as it relates to the County's General Plan and various area, community, and neighborhood plan updates.  Please see relevant links below for more related information:

Department of Regional Planning (LA County Planning) - About page.

Link to official Public Works City boundary layer (shows all cities and unincorporated area, but not the individual unincorporated communities as recognized by LA County Planning).

Link to official Public Works City Annexations layer.

Link to Countywide Statistical Areas layer (jurisdictions broken down by neighborhood boundaries for the purpose of reporting statistics)

Last updated on 6/21/24 - following the adoption of the East San Gabriel Valley Area Plan three new unincorporated communities were added:  North Whittier, Pellissier Village, and South El Monte.