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Revised Race / Ethnic Population Estimates: Components of Change for California Counties — July 1970 to July 1990
September 2007
OFFICIAL STATE ESTIMATES
Acknowledgements
This report was revised by Melanie Martindale under the general direction of Mary Heim, Chief, Demographic Research Unit. The original report was prepared by John Malson. Linda Gage provided revised county controls. Programming assistance was given by Eric Ragsdale, while Evaon Schnagl provided data support.
Birth and death data were provided by the Center for Health Statistics (www.cdph.ca.gov), California Department of Public Health (www.cdph.ca.gov). Enrollment data were provided by the Statewide Educational Demographics Unit of the California Department of Education.
Suggested Citation
State of California, Department of
Finance, Revised Race/Ethnic Population Estimates: Components
of Change for California Counties,
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- Revised Race/Ethnic
Population Estimates: Components of Change for
California Counties,
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Revised Race / Ethnic Estimates
State and county race/ethnicity estimates are presented in this report, along with components of population change. Included are the race/ethnicity totals from July 1970 to July 1990. Historic data are given for these race categories: White (non-Hispanic), Asian and Pacific Islander (non-Hispanic), Black (non-Hispanic), and Native American (non-Hispanic). A separate ethnic category is provided for Hispanics.
Methodology
Births, deaths, and school enrollment data were collected annually by race/ethnicity at the county level. These data were regressed by race/ethnic group to smooth fluctuations in the data series, then a ratio correlation procedure created the race/ethnic group estimates. The regressed data for births, deaths, and school enrollment were used to develop annual crude rates, which were smoothed between censuses. Estimates for race/ethnic groups were produced in this way each year for each data series: births, deaths, and enrollment. The ratios to the total for each race/ethnic group were averaged and the results applied to the county total populations to produce the race/ethnic estimates. The method used to derive the county controls can be found in the latest latest
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