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Garbage Disposal District Boundary
Abstract: This layer contains Garbage Collection boundaries within the contract cities serviced by L.A. County DPW. Disposal districts maintained by other agencies, like City of LA or LA County...
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Historic LA County Supervisorial Districts (1971 – 1991)
Supervisorial District Boundaries for LA County for 1971, 1981, and 1991. Samples (click to enlarge) 1971 1981 1991 The data from 1991 was provided by the Registrar/Recorder. The data from 1971 and...
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2011 Supervisorial District Boundaries (Official)
Abstract: This layer contains the 2011 Official Supervisorial District Boundary for the County of Los Angeles. Purpose: Supervisorial District Boundary map for the County of Los Angeles Access...
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2011 LA County Street Centerline & Address File
CAMS Data (October 2011) Current data date: August 2012 – we will be releasing new versions of this data periodically. Important note: This file is not final – it is an intermediate step and should be...
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LA County Address Points
Address Points Current data date: June 2012 – we will be releasing new versions of this data periodically. This dataset contains address points from the Countywide Address Management System, a...
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2012 County of Los Angeles Bicycle Master Plan
Keywords: Bikeway, Bicycle, off-road Abstract: The dataset includes the bikeway network proposed in the 2012 County of Los Angeles Bicycle Master Plan. Purpose: The dataset includes the bikeway...
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City Boundaries
Current version – January 1, 2013 This layer contains Legal City boundaries (as opposed to Postal City) within L.A. County. The boundaries will not line up with the Thomas Brothers city layer....
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Bike Paths
May 29th, 2013 There are a number of sources of bike path data out there. We are working to combine them into a single authoritative data source, but in the meantime here are a few links to data you...
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City Annexations
City Annexations This layer contains information for locating past and present legal city boundaries within Los Angeles County. These City Annexation polygons are used for city boundary analysis,...
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Los Angeles County Storm Drain System
Sample Channels, Gravity Mains, Catch Basins, etc. The Los Angeles County Storm Drain System is a geometric network model representing the storm drain infrastructure within Los Angeles County. The...
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LA County’s Unified House Numbering System
After 11 years in the County, and many years dealing with addresses, I just learned about our Unified House Numbering System guidelines, which points to all of the relevant source information that we...
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Early Historic Surveys
This layer was created for retrieving the earliest recorded surveys of original Spanish and Mexican land grants (Ranchos), along with original plats of the United States Public Lands Survey System...
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Los Angeles County Sanitary Sewers
The Consolidated Sewer Maintenance District (CSMD) of Los Angeles County is administered by the County of Los Angeles Department of Public Works (DPW). For the list of cities served, operational maps,...
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Land Records Information
Sample Tract, Parcel Maps and Records of Survey To make land records more easily available to the general public, the Los Angeles County Department of Public Works began scanning and posting thousands...
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Methane Producing Landfills
This data was created on April 30, 2012 to represent known disposal sites in Los Angeles County that may produce and emanate methane gas. The shapefile contains disposal sites within Los Angeles County...
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Instructional Videos
We have a pair of instructional videos for the LA County GIS Data Portal that will help you make better use of the data available on this site. The first video shows you how to find and download GIS...
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Stormwater Catchment Areas
Abstract: This GIS layer was created to delineate catchment areas for Municipal Separate Storm Sewer System (MS4) outfalls under the Los Angeles County Flood Control District (LACFCD) jurisdiction...
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Substructure Maps
Substructure Maps Grid A limited number of Substructure maps in “pdf” format are available via GIS polygons representing grids containing URL links. Across various areas of Los Angeles County, paper...
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The Works – Report A Problem
Los Angeles County, The Works This award winning application for iOS and DROID enables residents of Los Angeles County to interact with the Departments of Public Works, Parks and Recreation, Public...
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Flood Insurance Rate Maps (FIRMs)
Abstract: The Federal Emergency Management Agency (FEMA) creates and provides authoritative data related to flood insurance. Flood Insurance Rate Maps (FIRMs) data, where available digitally, can be...
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