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California Government Data
18,378 open datasets about California from 10 state and local governments and federal agencies.
Datasets
18,378
State government
9,096
County and city
2,693
Federal, about the state
6,589
Open data portals
Official portals run by governments in California
- California Open DataState of California · data.ca.govCKAN4,680
- 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.govSocrata47
- Sonoma County Open DataSonoma County, California · data.sonomacounty.ca.govSocrata24
- DataSFCity and County of San Francisco · data.sfgov.orgSocrata668
California datasets
10,000+ datasets
Narrow by topic
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- Campaign Finance - Filings Received by SFECCity and County of San Francisco · Ethics CommissionA. SUMMARY This dataset lists the current campaign filings received by the SFEC; Campaign forms include FPPC forms 410, 450, 460, 461, 465, 470, 496, 497. Refer to the FPPC page for forms represented in this dataset . Filings of the following SFEC forms are alCSVJSONXMLUpdated 10/29/2026Daily
- Inventory of web domains managed by City and County departmentsCity and County of San Francisco · Digital ServicesA. SUMMARY This is an open data set of all known City domains with associated registrar, department, and owner information. The City and County of San Francisco (City) seeks to serve the public with trustworthy, consistent, reliable and safe websites, regardleCSVJSONXMLUpdated 10/29/2026Daily
- Mental Health (MH) and Substance Use Disorder (SUD) Provider Directory - Site ListCity and County of San Francisco · Public HealthA. SUMMARY This dataset contains information of Mental Health (MH) and Substance Use Disorder (SUD) programs / sites. It serves as provider directory for the general public to know and search for MH and SUD programs / sites contracted with the City and County CSVJSONXMLUpdated 10/29/2026As needed
- Mental Health (MH) and Substance Use Disorder (SUD) Provider Directory - Provider ListCity and County of San Francisco · Public HealthA. SUMMARY This dataset contains information of Mental Health (MH) and Substance Use Disorder (SUD) programs / sites. It serves as provider directory for the general public to know and search for MH and SUD programs / sites contracted with the City and County CSVJSONXMLUpdated 10/29/2026Daily
- Campaign Finance - San Francisco Campaign FilersCity and County of San Francisco · Ethics CommissionA. SUMMARY This dataset contains a list of active and terminated campaign committees and non-committee campaign finance filers in the Ethics Commission's records database. B. HOW THE DATASET IS CREATED This dataset comes from an export of the Ethics CommissionCSVJSONXMLUpdated 10/29/2026Daily
- Lobbyist Activity - Contacts with Public Officials (Schedule A)City of OaklandThis dataset includes contacts with City Officials by lobbyists to influence a governmental (municipal) decision on behalf of a client or employer listed in Schedule A of the Quarterly Lobbyist Activity Reports submitted to the City of Oakland. The dataset onlCSVJSONXMLUpdated 10/29/2026
- California Grants Portal- Grants OfferedState of California · California State LibraryThe Grant Information Act of 2018 (Stats. 2018, Ch. 318) required the State Library to build one website by July 1, 2020, “that provides a centralized location … to find state grant opportunities.” State agencies provide all information on grants.ca.gov to theCSVUpdated 10/29/2026Daily
- Home-Sharing RegistryCity of Santa Monica · BusinessRegistered Home-Sharing businesses with an active business license in Santa Monica.Updated 10/29/2026
- Active Business LicensesCity of Santa Monica · BusinessAll businesses with an active business license in the City of Santa Monica.Updated 10/29/2026
- Registered Special InspectorsCity of Santa Monica · DevelopmentIn addition to the inspections required by Section 108, some construction projects require that a deputy inspector verifies specific aspects of the construction and that the specifications conform to the approved drawings. The deputy inspector is required to rUpdated 10/29/2026
- Food Facility InspectionsMarin County, California · County of Marin, CADetailed information about each food facility inspection in Marin County. Data is updated daily. Data begins as of January 1, 2014. Inspectors' recent inspections are often not fully entered in their systems yet at the time of update. This is normal. Please viCSVJSONGeoJSONXMLUpdated 10/29/2026Daily
- Building Permit InspectionMarin County, California · County of Marin, CAInformation about residential and commercial building permit inspections processed by, and under the jurisdiction of, Marin County. Data is updated daily, and covers the time period beginning January 1, 2014 until the present. The related Building Permit datasCSVJSONXMLUpdated 10/29/2026Daily
- Building PermitMarin County, California · County of Marin, CADetailed information about each residential or commercial building permit processed by, and under the jurisdiction of, Marin County. Data is updated daily and covers the time period beginning January 1, 2014 until the present. Simpler permits, which are issuedCSVJSONGeoJSONXMLUpdated 10/29/2026Daily
- Table and Chairs and Display Merchandise Registrations (Shared Spaces)City and County of San Francisco · Public WorksA. SUMMARY This dataset contains all Tables and Chairs and Display Merchandise Registrations issued by the Department of Public Works. You can find more information on this program and submit your registration on sf.gov. B. HOW THE DATASET IS CREATED The datasCSVJSONGeoJSONXMLUpdated 10/29/2026Daily
- Hazardous Waste Id NumbersState of California · California Department of Toxic Substances ControlHazardous waste identification (ID) numbers are issued by the U.S. Environmental Protection Agency (Federal EPA ID number) or by the Department of Toxic Substances Control (California State ID number). The ID number identifies each handler of hazardous waste oCSVUpdated 10/29/2026Daily
- County Sheriff Reported CrimesMarin County, California · County of Marin, CAReported crimes of the Marin County Sheriff's Department. Data is updated every four hours. Data begins as of January 1, 2013. Each reported crime includes its date/time, approximate location, crime type, and crime classification. NOTE: For the safety and secuCSVJSONGeoJSONXMLUpdated 10/29/2026Hourly
- Hazardous Materials Facility DataSan Diego County, California · Environmental Health & QualityThis table provides the most frequently used and requested data associated with permitted Unified Program facilities that contain hazardous materials. This is not a full dataset. For a description of this data, see Facility data description. https://www.sandieCSVJSONXMLUpdated 10/29/2026
- Hazardous Materials Underground Storage Tank DataSan Diego County, California · Environmental Health & QualityThis table provides the most frequently used and requested data associated with permitted Unified Program underground storage tanks. This is not a full dataset. https://www.sandiegocounty.gov/content/dam/sdc/deh/waste/pdf/hmd/deh_hmd_ust_datadesc_civicdata.pdfCSVJSONXMLUpdated 10/29/2026
- Food Facility PermitsSan Diego County, California · Environmental Health & QualityThis table provides a list of Food Facilities regulated by the County of San Diego Department of Environmental Health Food and Housing Division. For a description of this data, see Facility data description: https://www.sandiegocounty.gov/content/dam/sdc/deh/fCSVJSONXMLUpdated 10/29/2026
- Building InspectionsSan Diego County, California · Planning and Development ServicesInspection history for permits in San Diego County, CA issued by Planning and Development Services since 2005 (updated daily).CSVJSONXMLUpdated 10/29/2026
- Housing FacilitiesSan Diego County, California · Environmental Health & QualityThis table provides a list of currently operating Housing Facilities regulated by the County of San Diego Department of Environmental Health Food and Housing Division.CSVJSONXMLUpdated 10/29/2026
- Pool FacilitiesSan Diego County, California · Environmental Health & QualityThis table provides a list of currently operating Pool Facilities regulated by the County of San Diego Department of Environmental Health Food and Housing Division.CSVJSONXMLUpdated 10/29/2026
- Hazardous Materials Inspection ViolationsSan Diego County, California · Environmental Health & QualityThis table provides the most frequently used and requested data associated with permitted Unified Program inspections and violations. This is not a full dataset. For a description of this data, see [Inspection and Violation data description.] (http://www.sandiCSVJSONXMLUpdated 10/29/2026
- Contractor Trades - Building PermitsSan Diego County, California · Planning and Development ServicesListing of contractor trades associated to permits issued by Planning and Development Services in San Diego County since 2005. (updates daily)CSVJSONXMLUpdated 10/29/2026
- Building Permits - Status HistorySan Diego County, California · Land Use and Environment GroupStatus history for permits issued by Planning and Development Services in San Diego County since 2005 (updated daily). Data published in the BLDS data format (http://permitdata.org).CSVJSONXMLUpdated 10/29/2026
Only the first 50 pages are listed. Narrow the list by area or type to see more.
Only show:State government (9,096)County and city (2,693)Federal agencies (6,589)
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 18,378 datasets: 9,096 from the state government, 2,693 from counties and cities, and 6,589 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 10/29/2026