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 and web application.

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

LAST UPDATED:  4/9/25 for several changes related to the South Bay and Westside Area Plan updates.  These updates took effect on 4/10/25, and specific changes are listed below:

• Del Aire -> Split by El Segundo Blvd - Del Aire to the north, and Wiseburn to the south (South Bay Area Plan).

• Alondra Park -> Alondra Park / El Camino Village; Westfield -> Westfield / Academy Hills (South Bay Area Plan).

• West Fox Hills -> Del Rey (Westside Area Plan).