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The Provisional Service Planning Area (SPA)Layer contains Department of Public Health SPAs as of 2011. Furthermore, Health Districts comprise the building blocks of Los Angeles County SPAs. The Provisional SPAs were created by the Los Angeles County Department of Public Health for planning purposes and are subject to change.
In 2014 and 2015, The LA County Enterprise GIS team under the Geographic Information Officer worked with the Unincorporated Area Deputies and Field Deputies of each Board Office to establish names that reflect the desires of residents.
CSAs differ from the more informal Community geographies because:
They are focused on broad statistics and reporting, not mapping of communities.
They represent board approved names assigned to Census block groups and city boundaries.
They cover the entire unincorporated County (no gaps).
There are not overlapping areas.
Additionally, CSAs use the following naming conventions:
All names are assumed to begin with Unincorporated (e.g. Unincorporated El Camino Village) which will not be part of the CSA Name (so the name of the Statistical Area would be El Camino Village).
Names will not contain “Island.” Beginning each name with Unincorporated will distinguish an area from any surrounding cities. There may be one or more exceptions for certain small areas (e.g. Bandini Islands)
A forward slash implies an undetermined boundary between two areas within a statistical geography (e.g. Westfield/Academy Hills or View Park/Windsor Hills)
Certain established names may include hyphens (e.g. Florence-Firestone)
Aliases may be defined in parentheses (e.g. Unincorporated Long Beach (Bonner/Carson Park))
The original set of names were derived from community names used in the 2011 Redistricting process, chosen with the assistance of the Board of Supervisors.
Updates:
(1) 2023 January: Updated layer schema to include feature type (“FEAT_TYPE”) field, which can be one of land, water, breakwater, or pier (consistent with the City Boundaries layer).
(2) 2022 December: CSA data was updated to incorporate the “Tesero Del Valle” annexation to the city of Santa Clarita. Unincorporated Valencia is now completely annexed to the City of Santa Clarita. In addition to land area, this data also includes other feature types such as piers, breakwater and water area.
(3) 2022 September: CSA data was updated to match with city boundaries along shoreline/coastal area and minor boundary adjusted in some other areas.
The Sheriff's Department's patrol services are divided among four Patrol Divisions:
East Patrol Division - consists of Altadena Station, Crescenta Valley Station (La Cañada - Flintridge), Industry Station (City of Industry, La Habra Heights, La Puente), San Dimas Station, Temple Station (Bradbury, Duarte, Rosemead, South El Monte, Temple City), and Walnut Station (Walnut, Diamond Bar).
North Patrol Division - consists of Lancaster Station, Lost Hills Station (Agoura Hills, Calabasas, Hidden Hills, Malibu, Westlake Village), Palmdale Station, Santa Clarita Station, and West Hollywood Station.
Central Patrol Division - consists of Avalon Station, Century Station (Lynwood), Compton Station, East Los Angeles Station (Commerce, Cudahy, Maywood), Marina Del Rey Station, and South Los Angles Station (Lawndale).
South Patrol Division - consists of Carson Station, Cerritos Station, Lakewood Station (Artesia, Bellflower, Hawaiian Gardens, Lakewood, Paramount), Lomita Station (Lomita, Rancho Palos Verdes, Rolling Hills, Rolling Hills Estates), Norwalk Station (Norwalk, La Mirada), and Pico Rivera Station.
This layer contains the 2021 Official Supervisorial District Boundary for the County of Los Angeles, per Assessor parcels and the Department of Public Works' City/Community boundaries.
Last Updated: 3/4/2022 (Refer to Use Limitations Below)
Supplemental Information:Adopted December 15, 2021 - The County of Los Angeles Citizens Redistricting Commission’s Redistricting Plan adjusting the Official Supervisorial District Boundary for the County of Los Angeles pursuant to Elections Code Sections 21530 et seq. See Resolution No. 2021-04, Resolution of the County of Los Angeles Citizens Redistricting Commission Adopting a Redistricting Plan for the Los Angeles County Supervisorial Districts pursuant to Elections Code Section 21530 et seq.and Resolution No. 2021-05, Resolution of the County of Los Angeles Citizens Redistricting Commission Adopting a Redistricting Report for the Los Angeles County Supervisorial Districts pursuant to Elections Code Section 21534, subd. (d)(3).
Per Sec. 21531 of the California Elections Code, Supervisorial District boundaries in the County of Los Angeles are adjusted in the year following the year in which the decennial federal census is taken.
Published in the County Code under Title 1, Chapter 1.08, are boundary descriptions for the Supervisorial Districts.
The US Congressional Districts layer contains polygons for US Congressional Districts. The source for the information in this layer is the Los Angeles County Registrar-Recorder's Precinct Information File (PIF), The boundaries are based on the 2020 Census as provided by the California Secretary of State in 2021.
Where boundaries are defined by streets, water bodies, city boundaries, or other features, those boundaries are copied to the districts layer, so that the boundaries and other layer features match perfectly.
Last Update: March 2022
California public school locations with school-level demographics for the 2020-21 academic year
This layer serves as the authoritative geographic data source for California's K-12 public school locations during the 2020-21 academic year. Schools are mapped as point locations and assigned coordinates based on the physical address of the school facility. The school records are enriched with additional demographic and performance variables from the California Department of Education's data collections. These data elements can be visualized and examined geographically to uncover patterns, solve problems and inform education policy decisions.
The schools in this file represent a subset of all records contained in the CDE's public school directory database. This subset is restricted to K-12 public schools that were open in October 2020 to coincide with the official 2020-21 student enrollment counts collected on Fall Census Day in 2020 (first Wednesday in October). This layer also excludes nonpublic nonsectarian schools and district office schools.
The CDE's California School Directory provides school location other basic school characteristics found in the layer's attribute table. The school enrollment, demographic and program data are collected by the CDE through the California Longitudinal Achievement System (CALPADS) and can be accessed as publicly downloadable files from the Data & Statistics web page on the CDE website.
Schools are assigned X, Y coordinates using a quality controlled geocoding and validation process to optimize positional accuracy. Most schools are mapped to the school structure or centroid of the school property parcel and are individually verified using aerial imagery or assessor's parcels databases. Schools are assigned various geographic area values based on their mapped locations including state and federal legislative district identifiers and National Center for Education Statistics (NCES) locale codes.