This application provides users with access to download PDF maps of the Supervisorial Districts (countywide or by district) in various sizes. These maps were created by the Survey Mapping Property Management team in Public Works, and are meant for informational purposes only.

This application provides users with access to download PDFs of Community Profiles (for LA County, unincorporated and city areas), as well as maps of LA County Supervisorial Districts in various page sizes and detail. The Supervisorial maps reflect the district boundaries established on December 15, 2021 by the County of Los Angles Citizens Redistricting Commission.These maps were created by the Survey Mapping Property Management team in Public Works, and are meant for informational purposes only.

The Los Angeles County Flood Control District (District) was established in 1915 and encompasses approximately 2,758 square miles. The District operates and maintains one of the most complex systems of flood control and water conservation in the Country. The District’s current infrastructure includes 14 major dams and reservoirs, 483 miles of concrete and soft-bottom channels, 3,380 miles of underground storm drain conduits, 82,275 catch basins, 48 pump stations, 173 debris basins, 181 crib dams, 29 sediment placement sites, 27 spreading grounds, 21 low-flow diversion structures, 3 seawater barrier systems with 290 seawater barrier injection wells, 1 constructed wetland, and 1 mitigation bank area. Employees of the Los Angeles County Public Works (PW) serve as staff for the District. The District is separate from PW and funds of each entity remain in separate accounts. PW pays the District for the use of District equipment, materials and property used for County purposes. The District is empowered to carry out the objectives of the Los Angeles County Flood Control Act of 1915, California Water Code, Appendix, Chapter 28 (the Act). The objectives are to provide for the control and conservation of flood, storm and other wastewater and to protect from damage such as flood or storm waters, the harbors, waterways, public highways and property within the District. These powers are exercised by the County Board of Supervisors (Board), which acts as the governing body of the District. The duties of the Board include approving the District’s budget, determining the District’s tax rates, approving contracts, and determining when to issue bonds authorized by the voters of the District.

LA City Council Districts (Adopted 2021)Ordinance 187279 - Effective 12/10/2021View Ordinance 187279: https://clkrep.lacity.org/onlinedocs/2020/20-0668-S7_ord_187279_12-10-21.pdfLast Updated: 12/20/2021

This layer contains information for locating past and present County Lighting Maintenance District (CLMD) within Los Angeles County. Legal boundaries are only determined on the ground by surveyors licensed in the State of California.

For LA County Lighting Maintenance District Map, click here

Principal attributes:

TO_CLMD: Current County Lighting Maintenance District Number

ORIG_CLMD: Original County Lighting Maintenance District Number

ANNEX_NAME: Annexation Project or Petition Number

ANNEX_DATE: Effective annexation date

CITY_NAME: Respective jurisdiction within a city or unincorporated areas of LA County

ANNEX_TYPE: Annexation type is either "Project" or "Petition"

This group of layers are a geographic representation of the service boundaries for each of the programs administered by the LA County Department of Public Social Services (DPSS). Each DPSS district office is responsible for tracking and auditing the cases that fall within their boundaries. The following are the DPSS programs that have a service boundary:- CalFresh- CalWORKS- Medi-Cal- IHSS- GROW- General Relief- GAIN- CAPIPlease note that these layers are subject to change as DPSS sees fit and without prior notice. For more information on these programs, please visit https://dpss.lacounty.gov/.

This layer contains the current Official Supervisorial District Boundary for the County of Los Angeles, per Assessor parcels and the Department of Public Works' City/Community boundaries.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.Last Updated: 3/4/2022

This dataset seeks to encapsulate right of way parcel information for the Los Angeles County Flood Control District(LACFCD). It contains polygons representing each parcel and attribute information information that lists the basic identification information of those parcels. There is also information on the underlying right-of-way map that the parcel polygon and attributes are based on--with a link to that map in the Land Records Information Website.This data is maintained by the Right of Way Section of the Survey/Mapping and Property Management Division of the Department of Public Works. It is drawn to be coincident with the county's landbase linework and thus may not be a true representation of a parcel's boundary. It is intended to be used as a general information tool and is not survey quality.Field ListFacilityThe primary name of the facility this parcel belongs to. Typically the name of the river, stream, or drainage project it is a part of.Parcel_NoThe identification number for a particular parcel within a facility. The parcel number is not necessarilly unique.EstateThe type of estate that the LACFCD holds over a particular parcel. This field will list the following attributes:Fee: The LACFCD owns the parcel outright.Easement: The LACFCD holds an easement over this parcel. The type of easement is not listed in this data. It can usually be found in the linked right of way map or by contacting Right of Way Engineering.Quitclaim: This is a parcel which the LACFCD owned or had an easement over at some point but has now sold, released its claim, or transferred its right of way to another party.Other: This is a catch-all attribute for any sort of relationship that does not fit in the other estate types. One example of this is a permit that grants temporary rights to the LACFCD. Map_NoThe primary right of way map that shows a parcel and that served as the basis for the information shown in the dataset. These maps are maintained and are considered to take precedence over the data in this dataset.MapLinkThis is a link to a a scan of the map, if one exists, listed in the "Map_No" field. These are color scans found in the LA County's Land Records Information Website. Update Schedule: QuarterlyContact Info:Diego Veradvera@dpw.lacounty.gov(626) 458-7368Right of Way SectionSurvey/Mapping and Property Management DivisionDepartment of Public Works

Congressional Districts

This layer represents current city parcels within the City of Los Angeles. It shares topology with the Landbase parcel lines feature class. The Mapping and Land Records Division of the Bureau of Engineering, Department of Public Works provides the most current geographic information of the public right of way, ownership and land record information. The legal boundaries are determined on the ground by license surveyors in the State of California, and by recorded documents from the Los Angeles County Recorder's office and the City Clerk's office of the City of Los Angeles. Parcel and ownership information are available on NavigateLA, a website hosted by the Bureau of Engineering, Department of Public Works.Associated information about the landbase parcels is entered into attributes. Principal attributes include:PIN and PIND: represents the unique auto-generated parcel identifier and key to related features and tables. This field is related to the LA_LEGAL, LA_APN and LA_HSE_NBR tables. PIN contains spaces and PIND replaces those spaces with a dash (-).LA_LEGAL - Table attributes containing legal description. Principal attributes include the following:TRACT: The subdivision tract number as recorded by the County of Los AngelesMAP_REF: Identifies the subdivision map book reference as recorded by the County of Los Angeles.LOT: The subdivision lot number as recorded by the County of Los Angeles.ENG_DIST: The four engineering Districts (W=Westla, C=Central, V= Valley and H=Harbor).CNCL_DIST: Council Districts 1-15 of the City of Los Angeles. OUTLA means parcel is outside the City.LA_APN- Table attributes containing County of Los Angeles Assessors information. Principal attributes include the following:BPP: The Book, Page and Parcel from the Los Angeles County Assessors office. SITUS*: Address for the property.LA_HSE_NBR - Table attributes containing housenumber information. Principal attributes include the following:HSE_ID: Unique id of each housenumber record.HSE_NBR: housenumber numerical valueSTR_*: Official housenumber addressFor a complete list of attribute values, please refer to Landbase_parcel_polygons_data_dictionary.

© Randy Price Division Manager Mapping and Land Records Division Bureau of Engineering / Department of Public Works City of Los Angeles This layer is sourced from lacitydbs.org

Legislative District web map application is created to review and visualize current LA County legislative districts in an interactive way. This web map application includes Supervisorial Districts 2021, US Congressional Districts, California State Senate Districts and State Assemble Districts. The data source is the LA County eGIS Repository. This web map layer also includes county boundary as well as countywide statistical area (CSA) boundary and city/community names.

This website provides a limited number of Substructure Maps in “pdf” format via GIS polygons representing grids containing URL links. Across various areas of Los Angeles County, paper maps were created by Public Works (PW) and its predecessor Departments to show underground utilities such as cable TV, gas, oil, and telephone lines.

Though most of these maps are no longer updated, they can be useful as a research resource. Every reasonable effort has been made to assure the accuracy of this data and the maps referenced. Some cities may provide substructure information for the areas not covered by these grids. Additional and more accurate substructure data and information may also be obtained through the utility companies. Before digging, it is strongly advised to contact the Underground Service Alert (DigAlert Express) at www.digalert.org/digexpress.html or by calling 811.

Please note that California State Law Says, You Must Contact DigAlert!

The County of Los Angeles makes no warranty, representation, or guarantee as to the content, sequence, accuracy, timeliness, or completeness of any of the data provided herein or of any maps referenced. Los Angeles County Public Works recommends that all utility research be conducted under the supervision of a licensed civil engineer.

This web map displays the California Department of Education's (CDE) core set of geographic data layers. This content represents the authoritative source for all statewide public school site locations and school district service areas boundaries for the 2018-19 academic year. The map also includes school and district layers enriched with student demographic and performance information from the California Department of Education's data collections. These data elements add meaningful statistical and descriptive information that can be visualized and analyzed on a map and used to advance education research or inform decision making.

Zoned Districts were established when zoning was initially created for the UNINCORPORTED areas of Los Angeles County. They served to divide the County into smaller distinct units for easier record keeping and organization. Zoned Districts remain in use to identify and track records from the earliest period, and for performing queries regarding permits and ordinances adopted over time. For a list of Zoned Districts or other information regarding these districts, please refer to Title 22 of the Los Angeles County Code here.LAST UPDATED: 3/19/25 for an annexation to the City of Duarte.NEED MORE FUNCTIONALITY? If you are looking for more layers or advanced tools and functionality, then try our suite of GIS Web Mapping Applications.

This web map shows the major boundary differences of Los Angeles County 2021 Supervisorial District boundaries and 2011 supervisorial district boundaries.2021 Supervisorial District boundaries was adopted on December 15, 2021. 2011 Supervisorial District boundaries was adopted on September 27, 2011.How is this data created?This data is created by intersecting 2021 Supervisorial District boundary with 2011 Supervisorial District boundary and select only the major boundary change polygons.

Please note this layer is now deprecated.The layer contains the polygons of the School District Boundaries for Los Angeles County.

Please note: There are two types of school districts. The first type is a split district - a school district that separates the elementary school districts from the middle and high school district. The second type, a unified school district, combines all three types of schools.

In this dataset each unified district has its own polygon, and the split districts have a polygon for each combination of elementary and middle/high school district (users can use the District or Label fields to show either or both types of districts).Last Update: January 2012Update Frequency: As NeededContact Information:

Los Angeles County Registrar-Recorder/County ClerkGeographic Information Systems SectionFtoma@rrcc.lacounty.gov

The LA County 2021 Redistricting WebApp provides an interactive platform that allows users to explore the changes in supervisorial district boundaries between the 2010 and 2020 redistricting efforts. The app visually compares the old and new district maps, highlighting shifts in geographic adjustments and the impact on political boundaries. Users can toggle between the 2010 and 2020 maps to see how population changes and community needs influenced the redrawing of district lines, ensuring fair and equitable representation across the county.

School District Boundaries are defined by the Los Angeles County Board of Education.The RRCC offers wall maps for sale to the public through our Website www.LAVOTE.gov or by visiting our office.

Fire Station boundaries for the Los Angeles County Fire Department. This layer includes 174 full-time station locations but excludes the seasonal station at the Los Angeles County Fair. Boundaries are not rectified to parcel boundaries. Last Updated: October 2024Update Frequency: As NeededContact Information:Los Angeles County Fire DepartmentGeographic Information Systems SectionLACoFDGIS@fire.lacounty.gov

There were 15 Setback Districts adopted between 1932 and 1955, of which 11 remain in the unincorporated area (the other four having been absorbed into city boundaries as a result of city incorporations, annexations, etc.). This layer features polylines for the individual setbacks as shown on the adopted ordinance maps for each of the Setback Districts. For more information about Setbacks, please refer to the Supplemental Districts section of the County Code (Title 22) here.UPDATE HISTORY:6/5/25 - Added to Open Data6/23/24 - Updated for the changes resulting from the East San Gabriel Valley and Metro Area Plan updates. These actions modified existing setbacks, and also corrected the data that had referenced the establishing setback map, but not the subsequent amendments.