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Los Angeles County Service Planning Areas (SPAs), updated in 2022. Los Angeles County is divided into eight SPAs for health care planning purposes.
Updating SPA and Health District boundaries to align with new U.S. Census Bureau census tract boundaries is performed after every Decennial Census.
How was this data created?
The 2020 Census Tracts from the U.S. Census Bureau's 2021 TIGER/Line were used as building blocks for the SPA layer. The 2012 SPA layer was compared to the 2020 Census Tracts to provide preliminary information on the SPAs associated with each Census Tract and to determine where SPAs no longer aligned. For the 2022 SPA layer, boundaries were updated to align with the 2020 Census Tract boundary changes with consideration for maintaining effective service delivery. The SPAs were refined to conform with the County boundary and coastline from the Supervisorial Districts 2021 and County Boundary layers.
Data Fields:
SPA (Type = Text, Length = 1, Alias = SPA 2022): SPA number as text; a numeric but non-quantitative identifier
SPA_NAME (Type = Text, Length = 30, Alias = SPA NAME): Full SPA name
ABBV (Type = Text, Length = 5): Abbreviated SPA name
LABEL (Type = Text, Length = 10): Descriptive text of SPA for maps
SPA_NUM (Type = Short, Alias = SPA NUM): SPA number as number; field type from earlier 2012 version of SPAs
Update Frequency: After every Decennial Census or as needed
This layer represents current city boundaries within Los Angeles County. The Los Angeles County Department of Public Works provides the most current shapefiles representing city boundariesand city annexationson the Los Angeles County GIS Data Portal. True, legal boundaries are only determined on the ground by surveyors licensed in the State of California. Numerous records are freely available at the Land Records Informationwebsite, hosted by the Department of Public Works.
Principal attributes include:
CITY_NAME: represents the city's name.
CITY_TYPE: may be used for definition queries; "Unincorporated" or "City".
FEAT_TYPE: identifies the feature that each polygon represents:
Land - This value is used for polygons representing the land masses, if you want to see only land features on your map.
Pier - This value is used for polygons representing piers along the coastline. One example is the Santa Monica Pier.
Breakwater - This value is used for polygons representing man-made barriers that protect the harbors.
Water - This value is used for polygons representing navigable waters inside the harbors and marinas.
3NM Buffer - This value is used for polygons representing the three seaward nautical miles within the cities' limits, per the Submerged Lands Act.
POPULATION: Information in this field is supplied by Mark Greninger (mgreninger@cio.lacounty.gov).
Last Updated: 2021
The Census Bureau (http://www.census.gov/)maintains geographic boundaries for the analysis and mapping of demographic information across the United States. Every 10 years the Census Bureau counts the population of the United States as mandated by Constitution. The Census Bureau releases the results of this county as demographic data with geographic identifiers so that maps and analysis can be performed on the US population.
There are little more Census Tracts within Los Angeles County in 2020 Census TIGER/Line Shapefiles, compared to 2010.
UPDATED: March 2021
How was this data created?
This geographic file was downloaded from Census Bureau website: https://www2.census.gov/geo/tiger/TIGER2020PL/STATE/06_CALIFORNIA/06037/on February, 2021 and customized for LA County.
Data Fields:
1. CT20 (TRACTCE20): 6-digit census tract number
2. Label (NAME20): Decimal point census tract number
These ZIPCode boundaries were designed to assign ZIPCodes correctly to street centerlines using an identity command. Not recommended for high-resolution mapping - use the parcel specific boundaries instead.
UPDATE HISTORY:
7/1/2015 - changed two parcels parcels with the wrong ZIP Code
4/20/2016 - Update between 90059 & 90262 @ Mona Blvd. (Lynwood Sheriff Station)
6/23/2016 - Update between 90058, 90040 & 90201 @ E 52nd Dr. (90201 is now a single polygon)
7/7/2016 - Update between 90044 & 90003 @ W. 70th St.
7/7/2016 - Update between 90011 & 90058 on Long Beach Ave.
7/7/2016 - Update to 90704 for both Catalina & San Clemente Islands. Area modified to mirror existing
9/22/2021 - Update to boundary between ZIP Code 91355 and 91381 to reflect USPS changes related to Mission Village
1/03/2022 - Update to boundary between ZIP Code 91354 and 91390 to reflect USPS changes related to Tesoro Highlands Development
1/25/2022 - Update to various ZIP Codes (91321,91350,91351,91354,91355,91384,91387) to match USPS per DCFS notes
For more information, click here.
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 Section)
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.
This layer represents current city boundaries within Los Angeles County. The Los Angeles County Department of Public Works provides the most current shapefiles representing city boundariesand city annexationson the Los Angeles County GIS Data Portal. True, legal boundaries are only determined on the ground by surveyors licensed in the State of California. Numerous records are freely available at the Land Records Informationwebsite, hosted by the Department of Public Works.
Principal attributes include:
CITY_NAME: represents the city's name.
CITY_TYPE: may be used for definition queries; "Unincorporated" or "City".
FEAT_TYPE: identifies the feature that each polygon represents:
Land - This value is used for polygons representing the land masses, if you want to see only land features on your map.
Pier - This value is used for polygons representing piers along the coastline. One example is the Santa Monica Pier.
Breakwater - This value is used for polygons representing man-made barriers that protect the harbors.
Water - This value is used for polygons representing navigable waters inside the harbors and marinas.
3NM Buffer - This value is used for polygons representing the three seaward nautical miles within the cities' limits, per the Submerged Lands Act.
POPULATION: Information in this field is supplied by Mark Greninger (mgreninger@cio.lacounty.gov).
Last Updated: 2021
Represent's the outer land boundary of Los Angeles County. Land boundaries are derived from the Los Angeles County Cadastral landbase. Ocean boundaries are drived from NOAA coastline data, modified to conform with LAR-IAC aerial imagery where needed. The most current copy of this data is available at the Los Angeles County GIS Data Portal.