Skip to main content
U.S. flag

An official website of the United States government

CalHHS Data De-Identification Guidelines Reference Dataset

Published by California Health and Human Services Agency | State of California | Catalog Last Checked: November 28, 2025 at 07:18 PM | Dataset Last Updated: November 06, 2025 at 11:57 PM
These datasets are part of the California Health and Human Services Agency (CalHHS) Data De-Identification Guidelines (DDG) in the "State and County Population Projections" Appendix. The DDG assists CalHHS departments in evaluating data for public release while ensuring the privacy of individuals represented in the data. California population estimates serve as a foundation for the population-based scoring assessments outlined in the DDG.

Resources

9 resources available

  • Ethnicity and Race by County (2020 US Census)

    CSV
    Download

  • Detailed Race by County (2020 US Census)

    CSV
    Download

  • Detailed Ethnicity by County (2020 US Census)

    CSV
    Download

  • Population by County (2020 US Census)

    CSV
    Download

  • Data Dictionary - Population by County (2020 US Census)

    CSV
    Download

  • Data Dictionary - Ethnicity and Race by County (2020 US Census)

    CSV
    Download

  • Data Dictionary - Detailed Ethnicity by County (2020 US Census)

    CSV
    Download

  • Data Dictionary - Detailed Race by County (2020 US Census)

    CSV
    Download

  • All resource data

    ZIP
    Download

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
contactPoint 
                                            {
  "fn": "California Health and Human Services Agency",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:opendata@chhs.ca.gov"
}
description These datasets are part of the California Health and Human Services Agency (CalHHS) Data De-Identification Guidelines (DDG) in the "State and County Population Projections" Appendix. The DDG assists CalHHS departments in evaluating data for public release while ensuring the privacy of individuals represented in the data. California population estimates serve as a foundation for the population-based scoring assessments outlined in the DDG.
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "Ethnicity and Race by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=35fb39cc-cb68-4ad0-9d15-824c49250ba8&limit=0",
    "description": "Populations by Hispanic or Latino ethnicity by race by California counties and statewide based on the 2020 Census Demographic and Housing Characteristics File (DHC). For more information, please see the [DHC Technical Documentation](https://www.census.gov/programs-surveys/decennial-census/technical-documentation/complete-technical-documents.html#dhc-and-dp).

Source: Race Ethnicity by county and statewide for California: U.S. Census Bureau. "HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE." Decennial Census, DEC Demographic and Housing Characteristics, Table P9, 2020, <https://data.census.gov/table/DECENNIALDHC2020.P9?t=Race and Ethnicity&g=040XX00US06,06$0500000>. Accessed on December 5, 2024.",
    "downloadURL": "https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/cb5afa54-1ce3-4aae-a383-395f5cf39a92/download/ethnicity-and-race-by-county-2020-us-census.csv",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Detailed Race by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=5415827d-d238-4205-8410-5613f40dd210&limit=0",
    "description": "Populations by detailed race for California counties and statewide based on the 2020 Census Detailed Demographic and Housing Characteristics File A (Detailed DHC-A). For more information, please see the [Detailed DHC-A Technical Documentation](https://www.census.gov/programs-surveys/decennial-census/technical-documentation/complete-technical-documents.html#dhc-a).

Source: Detailed Race by county and statewide for California: U.S. Census Bureau. "TOTAL POPULATION." Decennial Census, DEC Detailed Demographic and Housing Characteristics File A, Table T01001, 2020, <https://data.census.gov/table/DECENNIALDDHCA2020.T01001?t=-00&g=040XX00US06,06$0500000&d=DEC Detailed Demographic and Housing Characteristics File A>. Accessed on December 5, 2024.",
    "downloadURL": "https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/d903a5cd-5d4f-462f-a2e7-a19e2de9477b/download/race-by-county-2020-us-census.csv",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Detailed Ethnicity by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=69d2e732-45cf-4cae-8d1d-9dd1ffffad5d&limit=0",
    "description": "Populations by detailed Hispanic or Latino ethnicity for California counties and statewide based on the 2020 Census Detailed Demographic and Housing Characteristics File A (Detailed DHC-A). For more information, please see the [Detailed DHC-A Technical Documentation](https://www.census.gov/programs-surveys/decennial-census/technical-documentation/complete-technical-documents.html#dhc-a).

Source: Detailed Hispanic or Latino by county and statewide for California: U.S. Census Bureau. "TOTAL POPULATION." Decennial Census, DEC Detailed Demographic and Housing Characteristics File A, Table T01001, 2020, <https://data.census.gov/table/DECENNIALDDHCA2020.T01001?t=-09&g=040XX00US06,06$0500000&d=DEC Detailed Demographic and Housing Characteristics File A.> Accessed on December 5, 2024.",
    "downloadURL": "https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/d70208a1-0ae7-4ddc-9cf3-b90bbcb4efa1/download/ethnicity-by-county-2020-us-census.csv",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Population by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=d3e02ccd-9081-453d-85dc-7f70df4907bd&limit=0",
    "description": "Populations by California counties and statewide based on the 2020 Census Demographic and Housing Characteristics File (DHC). For more information, please see the [DHC Technical Documentation](https://www.census.gov/programs-surveys/decennial-census/technical-documentation/complete-technical-documents.html#dhc-and-dp).

Source: Race Ethnicity by county and statewide for California: U.S. Census Bureau. "HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE." Decennial Census, DEC Demographic and Housing Characteristics, Table P9, 2020, <https://data.census.gov/table/DECENNIALDHC2020.P9?t=Race and Ethnicity&g=040XX00US06,06$0500000>. Accessed on December 5, 2024.",
    "downloadURL": "https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/83f5011f-004c-431d-83f6-69ec0b3ef838/download/population-by-county-2020-us-census.csv",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Data Dictionary - Population by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "description": "Data Dictionary for https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/83f5011f-004c-431d-83f6-69ec0b3ef838/download/population-by-county-2020-us-census.csv",
    "downloadURL": "https://data.ca.gov/datastore/dictionary_download/d3e02ccd-9081-453d-85dc-7f70df4907bd",
    "isDataDictionary": true
  },
  {
    "@type": "dcat:Distribution",
    "title": "Data Dictionary - Ethnicity and Race by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "description": "Data Dictionary for https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/cb5afa54-1ce3-4aae-a383-395f5cf39a92/download/ethnicity-and-race-by-county-2020-us-census.csv",
    "downloadURL": "https://data.ca.gov/datastore/dictionary_download/35fb39cc-cb68-4ad0-9d15-824c49250ba8",
    "isDataDictionary": true
  },
  {
    "@type": "dcat:Distribution",
    "title": "Data Dictionary - Detailed Ethnicity by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "description": "Data Dictionary for https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/d70208a1-0ae7-4ddc-9cf3-b90bbcb4efa1/download/ethnicity-by-county-2020-us-census.csv",
    "downloadURL": "https://data.ca.gov/datastore/dictionary_download/69d2e732-45cf-4cae-8d1d-9dd1ffffad5d",
    "isDataDictionary": true
  },
  {
    "@type": "dcat:Distribution",
    "title": "Data Dictionary - Detailed Race by County (2020 US Census)",
    "format": "CSV",
    "mediaType": "text/csv",
    "description": "Data Dictionary for https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/d903a5cd-5d4f-462f-a2e7-a19e2de9477b/download/race-by-county-2020-us-census.csv",
    "downloadURL": "https://data.ca.gov/datastore/dictionary_download/5415827d-d238-4205-8410-5613f40dd210",
    "isDataDictionary": true
  },
  {
    "@type": "dcat:Distribution",
    "title": "All resource data",
    "format": "ZIP",
    "mediaType": "application/zip",
    "downloadURL": "https://data.chhs.ca.gov/dataset/c522629f-44ae-4014-9a94-4404e749c87d/resource/0a179be0-be79-4d5e-b727-1168fbef058a/download/chhs-ddg-byko0a5r.zip"
  }
]
identifier dab39f7c-199f-4457-983b-af42075a5f9f
issued 2025-10-08T22:43:14.056885
keyword 
                                            [
  "agency",
  "california health and human services agency",
  "chhs",
  "ddg",
  "de-identification",
  "hipaa",
  "phi"
]
license http://www.opendefinition.org/licenses/cc-by
modified 2025-11-06T23:57:43.760930
publisher 
                                            {
  "name": "California Health and Human Services Agency",
  "@type": "org:Organization"
}
theme 
                                            [
  "Health and Human Services"
]
title CalHHS Data De-Identification Guidelines Reference Dataset

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov