CalHHS Data De-Identification Guidelines Reference Dataset
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.
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
Detailed Race by County (2020 US Census) 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. | Download | CSV | 10/10/25 |
Detailed Ethnicity by County (2020 US Census) 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. | Download | CSV | 10/10/25 |
Ethnicity and Race by County (2020 US Census) 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. | Download | CSV | 10/10/25 |
Population by County (2020 US Census) 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. | Download | CSV | 10/10/25 |