AndreaBozzo/ceres-open-data-index huggingface dataset:
LACoFD Jurisdictional 2000 Meter Grid (Feature Layer)

The Los Angeles County Fire Department is utilizing a 2000 Meter grid system for dispatching, data analysis and map production. It is based on the 1000 Meter grid developed by the United States National Grid (USNG). A page numbering system for this 2000 Meter grid was created for use by the Los Angeles County Fire Department. Last Update: 2017 Update Frequency: As Needed Contact Information: Los Angeles County Fire Department Geographic Information Systems Section [LACoFDGIS@fire.lacounty.gov]
Commercial WIFI Hotspots

Commercial WiFi access points for use in the LA County Hotspot Locator: [https://findwifi.lacounty.gov]. Update Frequency: As needed Last Updated: June 2020 Source: Data scraped from websites for McDonalds, Spectrum, and Starbucks. This work was performed by Eric Petzel from US Digital Response. There were discussions to automate this process and expand to other commercial locations.
Current Election Vote Centers Locations - Public View

This hosted view feature layer is a public copy of the Election Vote Centers (Current). Data found includes all vote centers used in current election. This layer is for public use. Attributes Include: Vote Center ID: Unique Identifier Vote Center Type: Vote Center Name: Vote Center Room: Vote Center Address: Vote Center City: Vote Center Zip: Full Address: Latitude (Y) Longitude (X) Supervisorial District GIS Status: GIS Comments: Permanent Service Area 11 Day: Permanent Service Area 4 Day: Permanent Service Area VBM: PC Status: When filtering/querying please use a combination of : ElectionID Publication_Status Last Updated 5/15/2026 by RRCCgis
LA County Benchmarks

Los Angeles County Department of Public Works’ Vertical Control Network is composed of more than 1,700 miles (2,720 kilometers) of level runs and comprise nearly 9,000 benchmarks. The basic accuracy of the net is reflected by an indicated field probable error of ± 0.017 feet per mile (4 mm per kilometer) of leveling as determined from conditions of closure. However, because of varying degrees of subsidence and heaving, the true datum is recovered only by obtaining substantial agreement of a number of benchmarks. For each active benchmark, a point representation was created in GIS by locating them based on their description. Parcel data, mile markers, the County Address Management System (CAMS), LARIAC aerials, oblique photos, 2-foot contour lines and/or Google Street View were used in assisting with the location. The creation of the benchmarks in GIS greatly enhances the Vertical Control Network by adding visual context with respect to their representative geospatial locations. With a glance, geospatial patterns can be observed and out-of-place benchmarks can be quickly identified and remapped to the correct location after verification. To facilitate the adjustment, indexing and distribution of adjusted values in the network, the county territory was divided into 33 quads or areas. For identification purposes, each quad was given a name (for example, “Rosemead”, “La Mirada”, “Santa Fe”, and etc.). Index maps, county maps, and other information can be accessed and downloaded on the basis of each of the quads by going to Survey Division’s Benchmark Retrieval System ([https://pw.lacounty.gov/sur/benchmark]). General adjustments are carried out every 5 to 10 years and the provided elevation data is expected to remain sound during this period. When a quad is adjusted, new elevations will be published and the date of the readjustment will be noted. No historical data is provided, but it can be acquired from Survey Division’s Public Records Counter or via the fee based Optional Technical Research (OTR) program. For general questions, contact: Hector Chang 626-458-7038 [hchang@dpw.lacounty.gov] For survey-related questions, contact: Charles Springstun 626-320-9896 [cspring@dpw.lacounty.gov] The following resources can be used to obtain historical benchmark data: PUBLIC RECORDS COUNTER 900 S. Fremont Ave, 4th Floor Alhambra, CA 91803 7:00 AM to 5:00 PM Mon – Thurs Phone: (626) 458-5137 OPTIONAL TECHNICAL RESEARCH (OTR) 7:00 AM to 5:00 PM Mon – Thurs Phone: (626) 458-5131
LA County Housing Element - Select Entitled Projects

As part of the Housing Element Update (6th cycle), projects were identified that had 8 or more housing units (subivisions and non-subdivisions), but are not yet permitted. Income levels are also shown in this layer. For more information about these types of projects, along with a listing of all projects that are represented in this layer, please click [here] (Housing Element Update - page 196 of PDF). Created in early June, 2021. UPDATE HISTORY: * 8/18/21 - with latest info * 9/21/21 - updated with latest unit and notes from Table III-36. Added Supervisorial District field. * 12/30/21 - added 2021 Supervisorial Districts field
RRCC Vote Centers

Update: This layer is no longer being updated. Please reference new Authoritative data: [https://lacounty.maps.arcgis.com/home/item.html?id=2d8a0acaf8a34ebbbb8a6795d753d095] Point Layer of all the locations that will serve as a Vote Center during the Novembere 2025 Voting Period, this data is subject to change without notice. Published by LA County Register-Recorder/County-Clerk. Last updated 12/10/2025 by Lizet Villanueva
IPAWS Jan 2025 Fire Alerts

Fire-related Evacuation Warnings, Evacuation Orders, and Local Area Emergency Alerts issued to Los Angeles County residents during the month of January, 2025. Note that these are alert notification areas, which differ from official Evacuation Areas maintained by Genasys. See [Maximum Extent Evacuation Zones - LA County Fires 2025] in LA County Open Data for the combined full extent of affected areas during the fires. IPAWS Aware is a partnership between the County of Los Angeles Chief Executive Office | Office of Emergency Management (OEM) and FEMA's IPAWS Program. IPAWS Aware monitors the national Integrated Public Alert & Warning System (IPAWS) Open Platform for Emergency Networks (IPAWS-OPEN) every 15-seconds for active IPAWS messages. IPAWS Live Feed available at [IPAWS Aware (Public View Layer) - Overview]. Questions about IPAWS: [gis@ceooem.lacounty.gov]. Questions about this layer: [egis@isd.lacounty.gov]
LACoFD Hydrants (Feature Layer)

**NON-AUTHORITATIVE LAYER ** Please consult local water company for an authoritative data source. Approximate hydrant locations within the Los Angeles County Fire Department’s jurisdiction. Data is not spatially accurate as it was digitized for use with Departmental maps built at 1:5,600 scale. Last Update: July 2026 Update Frequency: As Needed Contact Information: Los Angeles County Fire Department Geographic Information Systems Section [LACoFDGIS@fire.lacounty.gov]
Los Angeles County Established Precincts

Established precincts of Los Angeles County as of June 2025. Precincts are updated twice a year. These precincts are created and edited by the Los Angeles County Registrar-Recorder/County Clerk GIS section (RRCC). These precincts are for maintaining voter distributions across the County and are not for reporting voting results. Please contact the RRCC for information on consolidated election precincts to learn more.
Food Deserts

Dataset is an overview of food access indicators for low-income and other census tracts using different measures of supermarket accessibility. This dataset provides food access data for populations within census tracts; and offers census-tract-level data on food access that can be used for community planning or research purposes. Data from USDA Economic Research Service (ERS) [Food Access Research Atlas], 2019. Last updated 4/27/2021. See also USDA map service at [https://gisportal.ers.usda.gov/server/rest/services/FARA/FARA_2019/MapServer].
Registrar Recorder State Assembly Districts (2021)

The State Assembly Districts layer contains polygons for California State Assembly Districts. The source for the information in this layer is the Los Angeles Registrar-Recorder's Precinct Information File (PIF),The boundaries are based on the 2020 Census as provided by the California Secretary of State in 2021. Where boundaries are defined by streets, water bodies, city boundaries, or other features, those boundaries are copied to the districts layer, so that the boundaries and other layer features match perfectly. Last Update: March 2022
DPR Park Facilities (Public - Hosted)

*COUNTY PARKS ONLY* DPR park facilities, including local and regional parks, golf courses, natural areas, sanctuaries, and special use facilities. Undeveloped park land is also included here. Data last updated in December, 2025 and is routinely updated as needed. For data questions, please contact Deborah Hernandez at dhernandez2@parks.lacounty.gov
Public Works Landscape Maintenance Districts (Public View)

A Landscape Maintenance District (LMD) is a special district formed to provide benefiting property owners the opportunity to pay for enhanced landscaping and appurtenant improvements, maintenance, and services beyond those generally provided by the County of Los Angeles. The County Department of Public Works LMDs annually levy and collect special assessments in order to maintain landscape improvements. These improvements are located within three (3) Landscaping and Lighting Act (LLA) Districts established pursuant to the Landscaping and Lighting Act of 1972, Part 2 of Division 15 of the California Streets and Highways Code (the “1972 Act”).
DPSS_Offices

This layer contains the current service office locations for the Los Angeles County Department of Public Social Services. The following services are available to the general population: CalFresh, CalWORKs, IHSS, GAIN, GROW, General Relief, Cash Assistance and Refugee services. Please note that not all services are available at all offices. This layer is being updated on an "as needed" basis and may change at any time without prior notice.
County of Los Angeles Libraries Summer Lunch 2023

Children and youth ages 18 and under receive nutritious lunch and snack that include vegetables, fruits, seeds and healthy dairy products like milk, string cheese and yogurt, at 47 LA County Parks and 15 LA County Libraries. June 12 thru August 4 No Lunch and snack on June 19 and July 4 County Parks and County Libraries will serve lunch from 12 to 1PM. County Parks will serve snacks from 3 to 4 p.m.
Palisades and Eaton Dissolved Fire Perimeters (2025)

The original NIFC FIRIS fire service contains snapshots of daily fire perimeters. The boundary polygons were dissolved for each fire to create a single fire burn perimeter. Note: One of the records (mission = 2025-CALAC-009087) for Eaton was not included because "destroyed" DINS points were buffered to be included in the perimeter. These properties may not represent a burned area. Please review/check source records for any updates and accuracy. Credit: NIFC FIRIS The source of the hosted service/dataset is here https://services1.arcgis.com/jUJYIo9tSA7EHvfZ/ArcGIS/rest/services/CA_Perimeters_NIFC_FIRIS_public_view/FeatureServer
Address Points

Data Updated: July 13, 2026 This dataset contains address points from the Countywide Address Management System, a collaborative program between the County’s Registrar/Recorder, Chief Information Officer, Public Works Department, Department of Regional Planning, and many local cities to manage addresses and street centerlines for the purposes of geocoding and cartography. More information about this layer can be found on the https://cams-lacounty.hub.arcgis.com/ What this data is (and isn’t) This dataset contains the best available information, with close to 3 million primary and secondary addresses in the County of Los Angeles. It does NOT include information about every unit, suite, building, and sub-address. With probably over 7 million addresses, we have a ways to go. Description This dataset includes over 2.9 million individual points for addresses in the County. Data has been compiled from best available sources, including city databases, LA County Assessor parcels, and the County’s House Numbering maps. Please see the Source field for information. Street Name information has been split into multiple fields to support the County’s specifically designed geocoders – please see the entry on LA County Specific Locators and Matching rules for more information. Multi-address Parcels Some of our data sources (LA City, LA County, for example) have mapped each individual address in their city. These may also show unit information for an address point. A property with multiple addresses will show a point for each address. For some cities where this has not happened, the data source is the Assessor, where the primary address of the property may be the only address shown. We invite cities and sources with more detailed information to join the CAMS consortium to continue to improve the data. Legal vs. Postal Cities Many users confuse the name the Post Office delivers main to (e.g. Van Nuys, Hollywood) as a legal city (in this case Los Angeles), when they are a postal city. The County contains 88 legal cities, and over 400 postal names that are tied to the zipcodes. To support useability and geocoding, we have attached the first 3 postal cities to each address, based upon its zipcocode.
Address Street Lines

Data Updated: July 13, 2026 This dataset contains address road segments from the Countywide Address Management System, a collaborative program between the County’s independent cities, Registrar/Recorder, Chief Information Officer, Public Works Department, Department of Regional Planning, and many others to manage addresses and street centerlines for the purposes of geocoding and cartography. More information about this layer can be found on the https://cams-lacounty.hub.arcgis.com/ What this data is (and isn’t) This dataset contains the best available information on Road Naming and includes address ranges, primary and secondary classification of roads within the County of Los Angeles. The dataset is NOT a NETWORK Dataset and does NOT support routing features. As well, the road features do NOT include information on turn restrictions, speed limits, etc. Description This dataset has been compiled from best available sources, including city databases, LA County Assessor parcels, and the County’s Road network maps. Please see the Source field for information. Street Name information has been split into multiple fields to support the County’s specifically designed geocoders – please see the entry on LA County Specific Locators and Matching rules for more information.
Environmental Health Housing Routine and Complaint Violations 07/01/2023 to 06/30/2026

This dataset contains Environmental Health inspection and violation data for hotels, motels, and Multi-Family Dwellings (MFDs) with five or more units in Los Angeles County. Los Angeles County Environmental Health is responsible for inspecting these properties to ensure compliance with applicable state and local health and safety regulations. Inspection and enforcement services are provided in all unincorporated areas and 85 of the 88 cities within Los Angeles County. This dataset does not include data for the cities of Pasadena, Long Beach, or Vernon, each of which operates its own local health department. Each record represents a violation identified during a routine housing inspection conducted by Los Angeles County Environmental Health. To associate violations with the inspection in which they were identified, link this dataset to the Housing Inspections dataset (Environmental Health Housing Routine and Complaint Inspections) using the Serial Number field. Data Dictionary: Field Name Description SERIAL NUMBER*: Unique identifier for each inspection VIOLATION STATUS: Identifies the status of the violation VIOLATION CODE: The code of the violation VIOLATION DESCRIPTION: A description of the violation code * The Serial Number* is the primary key to review the inspection (Inspection Result dataset) * Each row represents one health code violation. * All rows with the same Serial Number are part of the same inspection.
Population with Limited English Proficiency

Population with limited English proficiency is defined as persons over the age of 5 years that speak English less than very well. Individuals with limited English proficiency can face significant language barriers, which can make it difficult for them to navigate various social systems, such as educational institutions, or access essential services, such as health insurance, healthcare, or food assistance programs. Added in July 2026 Top 10 Languages spoken at home by population (5 years and over) and that speak English "less than very well" ranked by number of language speakers. For areas where Chinese is in the top 10, the Chinese languages spoken at home by population (5 Years and Over) and that Speak English "less than very well" are also provided and ranked by number of language speakers. For more information about the Community Health Profiles Data Initiative, please see the [initiative homepage.]
LA County Boundary

County of Los Angeles boundary for use in web maps and applications, specifically those maintained by the LA County EOC GIS Unit. The official County Boundary from the eGIS Data Repository was "un-merged" and attributes were altered, as follows: * TYPE was originally land and may now be mainland or island. * NAME was originally Los Angeles County and may now be Los Angeles County, Santa Catalina Island, or San Clemente Island. The polygons were then "re-merged" based on the NAME field. As a result, definition queries may be applied, as needed.
CalFresh Recipients % per Tract

About the Data Source data for the dashboard at [Dashboard CalFresh Recipients Rate] developed for the [LA County Poverty Alleviation Initiative] (PAI). This dataset will be updated quarterly. CalFresh Recipients have been geocoded by their address on file. Commonly, a Department of Public Social Services (DPSS) office or other proxy address is used rather than the recipients actual home address. This can result in a % of total tract population higher than 100%. CalFresh recipient data is the monthly average of recipients by quarter, and total population data is from the American Community Survey 2024 5-Year data. CalFresh recipient data have first been aggregated to the Census Tract level to protect privacy, so it is possible that the estimated number of recipients per Supervisor District varies slightly from the actual number of recipients per district. This is because an entire tract is assigned to one district based on the location of the center of that tract. For more Information For more information about the LA County Poverty Alleviation Initiative, please visit [https://ceo.lacounty.gov/pai/]. This dataset was created as a collaboration between Los Angeles County's [Chief Information Office] and [Enterprise GIS] teams.
Los Angeles County Public Works Road Maintenance Division Tree Inventory (Public View)

This hosted feature layer contains parkway trees located in the UNINCORPORATED areas of Los Angeles County. Parkway trees are those which are located in the public right of way and typically are located in the area between the edge or roadway or curb and the adjacent private property line. This layer also contains trees located in medians within the public right of way. A parkway tree is a tree that is typically planted by Public Works or a developer who built the home or adjacent building. Los Angeles County Public Works cares for and maintains approximately 170,000 parkway trees throughout the County's unincorporated communities along 3,200 miles of roadway. This inventory also includes approximately 30,000 potential vacant sites identified by Public Works. These vacancies are not comprehensive of all potential planting sites. Residents with inquiries regarding tree planting should contact Public Works for more information on our tree planting program. This inventory is actively updated by our Public Works and includes the following view-able fields. 1. Status - Tree status 2. Maintenance District 3. Road District 4. Area 5. Street Name 6. Address 7. Side 8. Site 9. Common 10. Height 11. Spread 12. DBH (Diameter at chest height) 13. Overhead Lines 14. Parkway Size For further information on this hosted feature layer, please contact Mr. Steven Gutierrez at sgutierrez@pw.lacounty.gov
Parcels 2025 Fires Debris Removal (Public View)

This hosted feature layer-view aggregates Damage Inspections (DINS) and debris removal information from Environmental Protection Agency (EPA), US Army Corps of Engineers (USACE), and LA County via the consultant TetraTech at the parcel level. ROE (right-of-entry) means property owners opted-in. EPA info has been finalized. The parcels with DINS are used as a base: [https://lacounty.maps.arcgis.com/home/item.html?id=a27b7a1aab2d411b9e389b241f1df95b] The EPA parcels were also referenced: [https://lacounty.maps.arcgis.com/home/item.html?id=f1843b0f89dc4c3bb2034ebde76876ba] Used in their AGOL site: [https://storymaps.arcgis.com/collections/13a8b227ac104bb1b1fa9592c92debe3] The LA County (via TetraTech) attributes came from a GIS source from this dashboard: [https://tt-emi.maps.arcgis.com/apps/dashboards/874a690d69694d2685d83d07a320e6dd] The USACE attributes came from their GIS dashboard: [https://jecop-public.usace.army.mil/portal/apps/experiencebuilder/experience/?id=efbee5617ffa4d17b572d5f312004806]
PAI Poverty Map Data

This layer is the source data for the [State of Poverty Los Angeles County] Dashboard. Layers include estimates of total population and population in poverty by demographics at each geography level in LA County for years 2018-2025. Filter layer by the "Year" column to view individual years. Source: Annual Population and Poverty Estimation, Los Angeles County ISD-Demography. ## Included Geography Levels * Split Census Tracts * Census Tracts * Countywide Statistical Areas (CSA) * Public Use Microdata Areas (PUMA) * Service Planning Area (SPA) * Supervisor District (SD) * Los Angeles County Split Census Tract and CSA boundaries correspond to the year of the population and poverty estimates. Census Tract, PUMA, SPA, SD, and county boundaries are current as of 2020 US Census. ## Field Names Please see Field Aliases for detailed field names. Field name logic: * 1st character Race/Ethnicity * t = Total * a = Asian * b = Black or African American * h = Hispanic or Latino * i = American Indian and Alaska Native (AIAN) * p = Pacific Islander * w = White * 2nd character Gender * t = Total * f = Female * m = Male * 3-4th characters Year * 2-digit year (2018-22) * Possible 5th character Poverty Level (%FPL) * a = Below 100% FPL * d = Below 200% FPL * g = Below 266% FPL * Remaining characters after underscore * t = Total (all ages) * <age1>_<age2> = Age Range <age1> to <age2> Example: tf20d_0_3 = Total Female Ages 0-3 Below 200% FPL in 2020. For questions about this dataset, please contact [egis@isd.lacounty.gov]. For more information about the LA County Poverty Alleviation Initiative, please visit [https://ceo.lacounty.gov/pai/].
Countywide Trails Points of Interest (Public - Hosted)

This dataset was developed to compliment our DPR Trails Countywide layer to show places to access trails. This data also contains locations of amenities, such as benches, drinking water, horse ties, litter recepticles, parking, and restrooms. Locations of bridges, overlooks, and picnicking areas are also included. Data last updated in January, 2020 and updated as needed. For data questions, please contact Kyle Williams at KWilliams2@parks.lacounty.gov.