Boundaries of all cities and unincorporated communities in the county.

UPDATE HISTORY (beginning 2015)

• 1/5/15 - Re-orginization between Torrance and Rolling Hills Estates

• 4/22/15 - Annexation to Los Angeles from Florence-Firestone (Jordan Downs)

• 6/9/15 - updated 'Adopted Date' for Santa Clarita Valley (wasn't done before!)

• 6/17/15 - following the adoption of the Antelope Valley Area Plan update, the boundary between Santa Clarita Valley and AV was updated, as well as the boundary between Kagel / Lopez Canyons and Antelope Valley.

• 8/31/15 - updated Universal City for Reorganization 2014-01.

• 11/5/15 - updated following the General Plan 2035 going into effect. Boundary change for Kagel / Lopez Canoyns, South San Gabriel / Whittier Narrows, and added boundary for Pepperdine University.

• 3/17/16 - following an Assessor adjustment of parcel #3022012017, city boundary between Palmdale and AV was adjusted. Informed DPW as well.

• 4/21/16 - updated San Clemente Island to match what DPW had (compared to imagery, ours was shifted). Also a re-orginization between the cities of Rolling Hills Estates, Rolling Hills, and Rancho Palos Verdes. Links to both are here (document 1, document 2).

• 11/15/16 - Updated for annexation to Santa Clarita that became effective on this day (link to official annexation document is here). Also, updates that resulted from a comprehensive city boundary update after comparison with Public Works' city boundary layer.

• 4/19/17 - Updated for reorganization between the cities of Pomona and Diamond Bar (click here).

• 2/5/18 - Updated for reorganization between the cities of Monrovia and Bradbury (click here).

• 11/20/18 - Updated for RPPL 2017005805 (adopted 10/30/18) for re-alignments between the unincorporated communities of Santa Clarita Valley and Antelope Valley (for plan amendment, click here).

• 11/21/18 - updated for Plum Canyon / Skyline Ranch / North Sand Canyon Annexation. This annexation was effective on 11/15/18, and a link to the official LAFCO annexation document is here.

• 1/29/19 - updated for South Walnut / Pomona annexation, which was effective on 1/16/19. A link to the official LAFCO annexation document is here.

• 5/28/19 - updated for detachment from city of Los Angeles to Del Aire. Effective 5/16/19, and a link to the official LAFCO annexation document is here.

• 7/25/19 - updated for annexation and detachment from the city of Arcadia to South Monrovia Islands and East Pasadena-East San Gabriel, respectively. Effective 6/13/19, and a link to the official LAFCO annexation document is here.

• 1/28/21 - updated a couple errors in the data - Date Adopted for the Florence-Firestone Community Plan, and updated Type for Walnut Park to 'NEIGH' (character length limit).