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Election Precincts

Election precincts (consolidations) for the March 3, 2020 Presidential Primary Election.

Download the data here:Â Election Precincts


RRCC Precinct Map Index

This Layer contains the grid of Precinct Maps for the County of Los Angeles. The RRCC Precinct Map Index divides the County of Los Angeles into 1620 polygons geospatially representing the locations of the Registrar-Recorder/County Clerks 7,759 Precincts/33,365 subprecincts (numbers subject to change). Each polygon covers an area 10,000 X 75,000 feet.

Download the data […]

RRCC Map Index

This Data Layer contains the RRCC Map Tile Index. This layer consists of 105 Polygons used in conjunction with the RRCC’s County Precinct Map Grid. When the Tile Index is overlayed, the Precinct Maps will be grouped into 16 or less pages per tile.

Download the data here.

L.A. County Street & Address File

Starting in September 2014, the data will be uploaded every week on Sunday with the newest revisions from CAMS (Countywide Address Management System).

Important note:Â This is the first output of the final data structure. Â In the next few weeks we will begin providing weekly updates as well as a number […]

Registrar Recorder Precincts

Updated as of December 2019

Contains precincts from the Los Angeles County Registrar/Recorder’s Office.  The Registrar/Recorder uses these precincts to run elections by grouping them into election precincts, so they capture the boundaries of all voting districts in the County, including, but not limited to:

LA County Supervisorial Districts US Congressional Districts State Senate […]

Polling Places – August 13, 2019 election

Polling locations assigned for the August 13, 2019 City of Los Angeles Council District 12 Special Runoff Election as of July 17, 2019. Â Note – these polling locations are subject to change. Â Changes occur when polling locations become unavailable at the last minute, or for a variety or reasons. The Los Angeles County […]

L.A. County Address Points

Address Points

Current data date: August 2014 -Â Data is automatically updating information weekly. For more information please visit the Countywide Address Management System page.

This dataset contains address points from the Countywide Address Management System (CAMS), a collaborative program between the County’s Registrar/Recorder, Chief Information Officer, […]

School District Boundaries (2011)

This dataset contains boundaries of school districts in LA County from 2011. Â This has been updated to reflect changes from the earlier 2002 dataset, but still contains some information (phone numbers, etc) from 2002 that have not been validated.

There are two different kinds of school districts:

Separated Districts – where the Elementary & […]

2011 Supervisorial District Boundaries (Adopted September 27, 2011)

Approved Boundaries

This GIS data file contains 2011 County Board of Supervisors district boundaries adopted September 27, 2011.

For full details of the process , please see this site: http://redistricting.lacounty.gov/.  The 2011-Board-Adopted-Plan (pdf file) is loaded here for your convenience.

These boundaries are based upon Redistricting Units (RDUs)Â […]

Historic LA County Supervisorial Districts (1971 – 1991)

Supervisorial District Boundaries for LA County for 1971, 1981, and 1991.

 Samples (click to enlarge)




The data from 1991 was provided by the Registrar/Recorder.

The data from 1971 and 1981 was digitized from scanned and rectified County […]

US Congressional Districts

US Congressional Districts in the County of Los Angeles […]

Supervisorial Districts (2001)

LA County Supervisorial Districts (2001) […]