This data depicts generalized land use classifications, each of which is intended to describe the dominant use characteristics within the area covered. Updated information regarding public parks, school sites, freeways, rail/transit lines, and other ownership-specific boundaries have been incorporated into this data. The actual use and intensity of development that may be […]
This is zoning for the unincorporated areas of Los Angeles County.
For more complete information, see Title 22 (Planning and Zoning) of the Los Angeles County Code, or stop by the office of the Los Angeles County Department of […]
Land Use Policy (1980 General Plan)
Referred to as the “General Plan” and encompasses the unincorporated areas (sometimes referred to as ‘islands’) not covered by a community, neighborhood or area plan. Adopted by the Board of Supervisors on November 25, 1980. Updated 4/27/15 for an annexation to city of Los Angeles […]
An Airport Influence Area is the area which current or future airport-related noise, over flight, safety, and/or airspace protection factors may significantly affect land uses or necessitate restrictions on those uses. It includes airport owned property, Runway Protection Zones (RPZ), inner & outer safety zones and Community Noise Equivalent Level (CNEL) contours.
Shows all airports in Los Angeles County. For a link to the Department of Regional Planning’s Airport Land Use Commission page, click here. UPDATED on 4/27/15 to reflect the name change from El Monte Airport to the San Gabriel Valley Airport
Download Shapefile (.zip)
The grid that shows the zoning maps that cover the unincorporated areas of Los Angeles County. This grid follows alignment and numbering system as the Department of Public Works House Numbering Maps. This was developed as part of the Zoning Map Conversion and Integration Project (ZCIP) – 2002 to 2006.
Updated 4/27/15 […]
These districts were established when zoning was created for Los Angeles County many years ago. It was a way to break the county up into distinct areas, smaller units, for easier record keeping and organization. It is still in use to identify and keep track of those ordinances and for running queries […]
The community standards districts are established as supplemental districts to provide a means of implementing special development standards contained in adopted neighborhood, community, area, specific and local coastal plans within the UNINCORPORATED areas of Los Angeles County, or to provide a means of addressing special problems which are unique to certain geographic […]
Two georeferenced images of historic maps of Los Angeles were downloaded from Earthworks, as posted by SoCalGIS. Since they were georeferenced I thought they might be of interest.
Many thanks to Harvard University Library for scanning and georeferencing these maps.
Click below to download
These shapefiles represent the Proposed Land Use Policy and Zoning associated with the Antelope Valley Area Plan update. This plan was adopted by the Board of Supervisors on 3/24/15. It should be noted that, despite the Board adoption, these layers are still to be considered PROPOSED until the plan goes into effect (date to be […]
These shapefiles represent the Proposed Land Use Policy and Zoning associated with the Antelope Valley Area Plan update. This plan was adopted by the Board of Supervisors on 11/12/14. It should be noted that, despite the Board adoption, these layers are still to be considered PROPOSED until the plan goes into effect (date […]
THIS LAYER HAS BEEN REMOVED pending the update of the Proposed Significant Ecological Areas Ordinance. Please visit the SEA Ordinance Page for the latest update on the status of this project (please click here). Below is the text that was posted in May, 2014 for this layer–FOR INFORMATIONAL PURPOSES ONLY:
This layer is […]
Proposed Significant Ecological Areas
Proposed updates to the Significant Ecological Areas are based on aerial imagery and parcels. Please note that proposed SEAs have not been officially adopted as part of the L.A. County General Plan. For the Existing/Adopted SEAs click here.
Proposed SEAs as defined by the Antelope Valley Area […]
With the release of the Local Roll to the public (see this data entry) we are now able to release the dataset that supports the LA County Solar Map (http://solarmap.lacounty.gov).
The Solar Map Database contains the results of the 2006 solar model (for details see this data […]
The Statewide Integrated Traffic Records System (SWITRS) is collected and maintained by the California Highway Patrol (CHP). SWITRS contains all collisions that were reported to CHP from local and governmental agencies.
The data available here were downloaded from the Transportation Injury Mapping System (TIMS) as UC Berkeley (http://tims.berkeley.edu/index.php). TIMS […]
Assessor Parcels from the 2014 Tax Roll are now available for download!
The Office of the Assessor (click here for their website) maintains assessment records of real and personal property in the County of Los Angeles, as well as a GIS Tax Parcel Base Map. The Assessor has recently changed its policies and […]
This dataset shows the geographic boundaries of public safety answering points, tied to correct/legal city boundaries. These geographic boundaries determine where an emergency call is routed, especially in the new e911 system. A Public Safety Answering Point (PSAP) is a state-managed local center where all 911 calls are routed. They are typically […]
This dataset contains quaternary faults within 50 miles of Los Angeles County.
Click here to download the shapefile
The source of this data is the USGS Earthquake Hazards Program. The data was downloaded from the Faults and Folds Database website (click […]
For planning purposes & reference within the General Plan Update.
Countywide layer which divides the County of Los Angeles into 11 Planning Areas. These area divisions were created for the LA County Dept. of Regional Planning by the GIS Section under direction from the General Plan Development Section. Reflects the most recent changes from the […]
I was recently made aware of a couple of sites where NOAA makes data available.
West Coast Ocean Data Portal, which hosts data related to the oceans on the west coast:
If you are looking for data from the US Forest Service, you can go to their Enterprise Data download location. I recently downloaded the boundaries of the new San Gabriel Mountains National Monument from there.
Click here to […]
If you are looking for flood zone data, you can access the information from FEMA through the FEMA GeoPlatform.
Here is a link to the home page: https://hazards.fema.gov/femaportal/wps/portal/NFHLWMS. At this site you can access the FEMA webmap to download data, and there are instructions […]
Update January 2015: This update added the new San Gabriel Mountains National Monument, as well as changes to the Wilderness areas in the monument (they are now the boundaries from the US Forest Service). There are also changes to the way that the these boundaries are represented. In the past the wilderness areas were clipped out of the […]
For UNINCORPORATED areas of Los Angeles County only. A Specific Plan implements the General Plan/Community Plan and is a more detailed version of the General Plan for a focused area. The Specific Plan articulates planning considerations and imposes regulations or controls. Updated 9/3/14 to add Marina Del Rey and Santa Catalina Island.
The Land […]
A town council is a democratically elected form of government for small municipalities or civil parishes. A council may serve as both the representative and executive branch. Click here for more information regarding Town Councils within the unincorporated communities of Los Angeles County. Source: individual town councils and the […]
This identifies areas that are presently or historically used for agricultural purposes. This information was digitized from the 1986 Antelope Valley Hazards and Resources map, and the 1980 General Plan Special Management Areas map. Source: Antelope Valley Area Plan (1986), General Plan Special Management Areas (1980).
Data can be downloaded here:
I was informed that high quality boundary files for cities and special districts in Orange County are available from Orange County LAFCO’s website.
LA Times aggregates a number of datasets, along with an API for accessing them.
Of greatest interest to most folks is the LA Times Neighborhood dataset (click here to access), as well as the LA County Regions.
NOTE: This layer has been rescinded due to the update of the Santa Monica Mountains Local Coastal Program, certified by the California Coastal Commission on October 10, 2014 (a link to the resolution is here). The new Sensitive Environmental Resource Areas and other Biological […]
Rural Outdoor Lighting District (Dark Skies)
This project is an amendment to Title 22 of the County Code, Planning and Zoning, to establish a Rural Outdoor Lighting District for areas of unincorporated Los Angeles County. The proposed Ordinance will establish the District with regulations that will conserve energy and resources and […]
This layer delineates ridgelines within selected CSDs whereupon restrictions are established for grading and ridgeline development. For more information on specific CSDs where these ridgelines reside, click here. Last updated 10/29/14 for updated Significant Ridgelines in newly certified Santa Monica Mountains Coastal Plan.
Data can be downloaded here:
Download Shapefile (.zip)
The Fire Department’s jursidictional areas. Includes: Stations-170, Battalions-22, Divisions-9 and Regions-3. There are 199 individual polygons with 30 Stations having 2 or more discrete polygons.
Click here for Shapefiles
Orange County now has a data portal for downloading GIS data, including parcels, road lines, etc. This looks like a very nice capability. You have to register to access the data, but it’s a great step forward: Click here to access
LA County, through its LARIAC program, has updated its 2008 building outlines to incorporate changes since the buildings were initially captured in 2008 (click here to view and download that data).
This new data is NOT public – you must be a member of LARIAC to access it. If you are interested in becoming a […]
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 Health, and Regional Planning by
Requesting facility and trail maintenance at County parks, as well as reporting potential health and safety […]
Note: The files within the repository have changed (.dbf rather than .csv)
We have loaded numerous County of Los Angeles population and poverty estimates at either the Census Tract level OR Census Tract-City split areas by age, gender, and/or race-ethnicity into the eGIS_Demographic database and the internal networked drive (members\Demography folder).
These datasets […]
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 maps were created by the Department of Public Works (DPW) and its predecessors to show underground utilities such as cable TV, gas, […]
Current data date: July 2014
Download the data
LMS_Data_20140707 – Zipped file geodatabase. Due to the length of a number of the fields, a shapefile with its 255 character limit is unable to store all of the information regarding description, hours, phone numbers, etc. This data was extracted July 7th, 2014. This is the […]
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 pursuant to a 2012 National Pollutant Discharge Elimination System (NPDES) permit.
Description: The data is a compilation of storm drain hydrology studies completed by the […]
We have decided that we should not post the County of Los Angeles Fire Department’s version of SRA. We do some tweaking that makes it incompatable with the state. So here is a link to the State of California’s version which is the legal one. http://frap.fire.ca.gov/projects/sra_mapping/index.php
How polluted is your neighborhood?
The California Office of Environmental Health Hazard Assessment (OEHHA), on behalf of the California Environmental Protection Agency (CalEPA), provides CalEnviroScreen 2.0, a screening methodology that can be used to help identify communities that are disproportionately burdened by multiple sources of pollution.
To access these GIS applications, downloadable GIS […]
The city boundary lines and polygons, along with the Los Angeles County boundary, were consolidated into the City Annexations post on this portal.
Starting in September 2014, the data will be uploaded every week on Sunday with the newest revisions from the CAMS system.
Important note: This is the first output of the final data structure. In the next few weeks we will begin providing weekly updates as well as a number of related symbolization files.
Adding the Median Income Chart
I posted yesterday about a major speed enhancement just released with the upgrade of Geocortex Essentials that was completed last week – Googly Search.
Here is another big addition that we are leveraging – CHARTS!
A few years ago the ESRI flex viewer had some pretty cool chart […]
Have you ever wanted the searches in our GIS applications to be more “Googly” – where as you type you get suggestions on the rest of the entry? I have dreamt about this. With the recent upgrade of our GIS Viewers to the newest versions of Essentials from Latitude Geographics (
fires1965-2013Updated Fire Perimeters 1965-2013
Our Mapping Unit collects all the perimeter data from field personnel during a major fire.
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 data from our site, while the second shows you how to use free software to […]
An example from Orange County
While this isn’t GIS data directly, the data available at the Traffic Data Branch website can be spatially enabled to show traffic counts at the various intersections of the State Highway System.
Data available include:
Traffic Counts […]
Data Licensed from US Data Depot showing the location, type, size, and other attributes for over 720,000 businesses in Los Angeles County. This data is for internal County use only and cannot be provided to external agencies. Pricing for this data is available at the
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 that once accepted degradable refuse material. Information used to create this data was extracted from a landfill survey performed by […]