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California Government Data
18,986 open datasets about California from 10 state and local governments and federal agencies.
Datasets
18,986
State government
9,106
County and city
2,693
Federal, about the state
7,187
Open data portals
Official portals run by governments in California
- California Open DataState of California · data.ca.govCKAN4,690
- DataSFCity and County of San Francisco · data.sf.govSocrata668
- LA County Open DataLos Angeles County, California · data.lacounty.govArcGIS Hub620
- Los Angeles Open DataCity of Los Angeles · data.lacity.orgSocrata361
- San Diego County Open DataSan Diego County, California · data.sandiegocounty.govSocrata349
- Oakland Open DataCity of Oakland · data.oaklandca.govSocrata313
- San Jose Open DataCity of San Jose · data.sanjoseca.govCKAN170
- Santa Monica Open DataCity of Santa Monica · data.santamonica.govCKAN82
- Marin County Open DataMarin County, California · data.marincounty.govSocrata46
- Sonoma County Open DataSonoma County, California · data.sonomacounty.ca.govSocrata24
- DataSFCity and County of San Francisco · data.sfgov.orgSocrata668
California datasets
10,000+ datasets
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- Dataset AlertsCity and County of San Francisco · DataSFA log of dataset alerts open, monitored or resolved on the open data portal. Alerts can include issues as well as deprecation or discontinuation notices.CSVJSONXMLUpdated 10/30/2026As needed
- MaherCity and County of San FranciscoDevelopment projects that are located on sites with known or suspected soil and/or groundwater contamination are subject to the provisions of Health Code Article 22A, which is administered by the Department of Public Health (DPH). This layer shows these areas.CSVJSONGeoJSONXMLUpdated 10/30/2026Weekly
- Campaign Finance - Public Funds ApprovedCity and County of San Francisco · Ethics CommissionA. SUMMARY This dataset lists candidates who have been certified by the Ethics Commission as eligible to receive public funds and the amounts of funds received. For more information about San Francisco’s public financing program for qualified City candidates, CSVJSONXMLUpdated 10/30/2026As needed
- Zoning Map - Special Sign DistrictsCity and County of San FranciscoSpecial Sign Districts https://codelibrary.amlegal.com/codes/san_francisco/latest/sf_planning/0-0-0-17747CSVJSONGeoJSONXMLUpdated 10/30/2026
- Surface Water - Freshwater Harmful Algal BloomsState of California · California State Water Resources Control BoardFreshwater harmful algal bloom (HAB) data are sourced from the Freshwater Harmful Algal Bloom (FHAB) data system. The FHAB data system is the California State Water Resources Control Board’s platform for data and information voluntarily reported to the agency.PDFCSVUpdated 10/30/2026Irregularly
- Rodent control by citywide contractorCity and County of San Francisco · EnvironmentNote 5/1/2026: This dataset has known errors and we do not recommend using it at this time. Thank you for your patience while we work on correcting the dataset. A. SUMMARY This database lists records of rodent treatments primarily in the City's combined sewer CSVJSONGeoJSONXMLUpdated 10/30/2026Daily
- Scorecard MeasuresCity and County of San Francisco · Controller's Office, CSA, City PerformanceDepartments collect and submit this data to the Controller's Office via the Budget and Performance Measurement System (BPMS). This data is collected to display on the City Performance Scorecard website, a site that provides timely performance information to thCSVJSONXMLUpdated 10/30/2026Daily
- Ground Water - Water Quality ResultsState of California · California State Water Resources Control BoardGroundwater quality data and related groundwater well information available on the page was queried from the GAMA Groundwater information system (**[GAMA GIS](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**). Data provided represent a collectioXLSXCSVUpdated 10/29/2026Quarterly
- Power Outages by CountyState of California · California Office of Emergency ServicesThe power outages in this layer are pulled directly from the utility public power outage maps and is automatically updated every 15 minutes. This dataset represents only the most recent power outages and does not contain any historical data. The following utilCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Power Outage AreasState of California · California Office of Emergency ServicesThe power outages in this layer are pulled directly from the utility public power outage maps and is automatically updated every 15 minutes. This dataset represents only the most recent power outages and does not contain any historical data. The following utilCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Power Outage IncidentsState of California · California Office of Emergency ServicesThe power outages in this layer are pulled directly from the utility public power outage maps and is automatically updated every 15 minutes. This dataset represents only the most recent power outages and does not contain any historical data. The following utilCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- CalHeatScore Live Data for API UseState of California · California Office of Environmental Health Hazard AssessmentCalHeatScore is a heat-health ranking system that translates 7-day weather forecasts into easy-to-understand heat scores ranging from 0-4 to indicate increasing levels of health risks due to extreme heat at the zip code level. This layer contains the 7-day forCSVZIPGeoJSONKML+5Updated 10/29/2026Irregularly
- Foothill Yellow-Legged Frog (Feather River DPS) Range - CWHR A043b [ds3345]State of California · California Department of Fish and WildlifeCWHR species range datasets represent the maximum current geographic extent of each species within California. Ranges were originally delineated at a scale of 1:5,000,000 by species-level experts more than 30 years ago and have gradually been revised at a scalCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- CNDDB-tracked Elements by County [ds2852] Extended TableState of California · California Department of Fish and WildlifeThis dataset provides basic California Natural Diversity Database (CNDDB) information at the California county level.CSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Wildlife Conservation Board (WCB) Approved Projects [ds672]State of California · California Department of Fish and WildlifeAn inventory of Wildlife Conservation Board projects from board inception in 1949 to present (publication date). Project boundaries are approximate and used various data sources, scale and heads-up digitizing. Some of the project boundaries do not represent acCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- CNDDB-tracked Elements by Quad [ds2853] Extended TableState of California · California Department of Fish and WildlifeThis dataset provides basic California Natural Diversity Database (CNDDB) information at the USGS 7.5 minute topographic quad level.CSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- NCCP Gains & Losses - San Diego [ds892]State of California · California Department of Fish and WildlifeAn NCCP identifies and provides for the regional protection of plants, animals, and their habitats, while allowing compatible and appropriate economic activity. Working with landowners, environmental organizations, and other interested parties, a local agency CSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Sea Otter Range - CWHR M164 [ds1946]State of California · California Department of Fish and WildlifeCWHR species range datasets represent the maximum current geographic extent of each species within California. Ranges were originally delineated at a scale of 1:5,000,000 by species-level experts more than 30 years ago and have gradually been revised at a scalCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Southern Sea Otter Range - CWHR M164a [ds3383]State of California · California Department of Fish and WildlifeCWHR species range datasets represent the maximum current geographic extent of each species within California. Ranges were originally delineated at a scale of 1:5,000,000 by species-level experts more than 30 years ago and have gradually been revised at a scalCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Chronic Wasting Disease Surveillance - CDFW [ds3157] Extended TableState of California · California Department of Fish and WildlifeThis compilation of layers provides a comprehensive view of CWD-related activities, facilitating informed decision-making and strategic planning for wildlife management and disease prevention efforts. To date, there has not yet been any cases of CWD detected iCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- Planting Location - CDFW [ds2897]State of California · California Department of Fish and WildlifeFish planting locations of the inland waters of California. This data is updated by CDFW Hatchery staff. This data is part of the CDFW Fishing Guide https://apps.wildlife.ca.gov/fishing/ . For more information on fish planting locations please visit, https://nCSVZIPGeoJSONKML+1Updated 10/29/2026Irregularly
- BOE CityAnx2027State of California · California Department of Tax and Fee AdministrationThis map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published on October 20, 2021, and was based on the State Board of Equalization's tax rate area boundaries. As of April CSVZIPGeoJSONKML+5Updated 10/29/2026Irregularly
- BOE CityCountyState of California · California Department of Tax and Fee AdministrationThis map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published on October 20, 2021, and was based on the State Board of Equalization's tax rate area boundaries. As of April CSVZIPGeoJSONKML+5Updated 10/29/2026Irregularly
- City and County Boundary Line ChangesState of California · California Department of Tax and Fee AdministrationThis map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published on October 20, 2021, and was based on the State Board of Equalization's tax rate area boundaries. As of April ArcGIS RESTUpdated 10/29/2026Irregularly
- Rural Hospitals Overview DataState of California · Department of Health Care Access and InformationThis is a summary of rural hospital characteristics. This dataset contains a variety of hospital-based variables, generated from Patient Discharge Data, Hospital Annual Utilization Report and Hospital Annual Financial Data. In addition, there are variables to XLSXCSVZIPUpdated 10/29/2026Yearly
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Only show:State government (9,106)County and city (2,693)Federal agencies (7,187)
Frequently asked questions
- Does California have an open data portal?
- Yes. California Open Data (data.ca.gov), DataSF (data.sf.gov), LA County Open Data (data.lacounty.gov) and 8 more publish open data for California.
- How many datasets are there about California?
- The DatenUS catalog lists 18,986 datasets: 9,106 from the state government, 2,693 from counties and cities, and 7,187 federal datasets that cover California.
- Is this data free to use?
- State and local portals usually allow free reuse under an open license or their terms of use, and most federal data is in the public domain. Check each dataset page for its license.
Source: California Open Data, DataSF, LA County Open Data, Data.gov Catalog · Last updated 10/30/2026
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