Updated October 2004
This file contains several documents to assist counties in planning to provide mental health services to their populations. The file contains prevalence rates of mental disorders by county based on the 2000 Census and updated to 2004, and state and county population trends from 2000 to 2004.
The Population Trends Tables 1 and 2 are from the State Department of Finance (DOF) and show the total population by state and county from 2001 through 2004. The data are based on the 2000 Census. The data are available from the DOF at the following site: http://www.dof.ca.gov/HTML/DEMOGRAP/Hist_E-4.xls
Population Trends Table 1 is the same as that on the DOF website with the addition of the last column that shows the percent change in the population from the 2000 Census to 2004. This percent is used on a county specific basis to update the prevalence. Population Trends Table 2 is the same as the first, but rank ordered based on the percent change in their populations. Notice that there is a wide variation in the population growth in just four years from Sierra, which it is estimated, actually experienced a slight decrease to Placer with an estimated increase of over 17 percent.
- Table 1- Population Trends (Alpha Order) PDF | Excel
- Table 2 -Population Trends (Rank Order) PDF | Excel
State Population Characteristics
The State Department of Finance (DOF) makes annual projections of the state population by county, race/ethnicity, gender, and single years of age. The following tables display that data in Excel pivot table format with the ages grouped into several categories. These data are based on projections made by the DOF based on the 2000 U.S. Census. There will be some differences between these data and estimates made by the DOF which are updated annually with data such as births, deaths, housing starts, etc. More detail about these methodologies and further data can be found on the DOF website at http://www.dof.ca.gov/HTML/DEMOGRAP/Druhpar.htm
- 2004 – pivot table of county, race/ethnicity, gender and age. ( PDF | Excel )
- 2005 – pivot table of county, race/ethnicity, gender and age. ( PDF | Excel )
- 2006 – pivot table of county, race/ethnicity, gender and age. ( PDF | Excel )
U.S. Census Data
The U.S. Census data are available for query at the website titled www.factfinder.census.gov. One can select by specific geographic area and then by several different data sets. Several tables have been extracted by county and the results are available below in Excel formats.
- 2000 – U.S. Census, Language Spoken at Home by County. ( PDF | Excel ) This is based on data collected on a sample of the population and has not been updated to current years.
- 2000 – U.S. Census, Detail on Group Quarters by County. ( Excel ) This is based on data collected on the entire population and includes institutions and group quarters. The data has not been updated to current years. Please note that this is based on the location of the person at the time of the census, not the county that might have placed a person in an institution. There are 59 worksheets within this workbook, one for each county and California. Click on the tab at the bottom of the page to select the county.
Homeless and Housing Information Links
The following links may be helpful in providing data on the number of persons who are homeless and/or prevalence data on persons who are homeless.
The Federal Department Office of Housing and Urban Development http://www.hud.gov
The Homeless Management Information
System (HMIS) Data and Technical Standards Web cast
Black and White version of the Power Point Presentation
The Institute for the Study of
Homelessness and Poverty at the Weingart Center.
http://www.weingart.org/institute/ August 2004 report with many references. Has data for communities in Los Angeles County, as well as county data for Monterey, Orange and San Bernardino Counties.
In addition to the prevalence data provided by Dr. Charles Holzer, there are other studies which have been conducted in California or other states that are relevant to estimating the prevalence of mental disorders in counties or in specific populations. Following are studies that may be useful to counties or organizations in estimating the prevalence of persons with mental disorders.
- The California Health Interview
Survey (CHIS) is a source of information on health
status and access to health care services among the
citizens of California. The CHIS is a telephone survey
of adults, adolescents, and children from all parts
of the state and is conducted every two years. It
is a collaborative project of the UCLA Center for
Health Policy Research, the California Department
of Health Services, and Public Health Institute.
The survey provides statewide information on the overall population, including many racial and ethnic groups, and local-level data for most counties. The data can be queried to address specific populations and health questions. There are several mental health questions that may be helpful in considering overall prevalence. Please note that these are not necessarily the same as the questions used by Dr. Holzer so the results may be different. More information about the CHIS is available at their website http://www.chis.ucla.edu/
The prevalence data shows the number of youth who have serious emotional disturbances (SED) and the number of adults who have serious mental illnesses (SMI). The original prevalence rates were develop through a contract with Dr. Charles Holzer, Ph.D., an epidemiologist at the University of Texas, Medical Branch. He has worked at the national and state levels on issues relating to epidemiology of mental illnesses for over 30 years. His methodology uses information from the Epidemiological Catchment Area (ECA) studies, the National Co-Morbidity Study (NCS), and rates of SED for youth published in the Federal Register based on a compilation of prevalence studies for youth ages 9 through 17 years. He applied these rates to all youth. The prevalence rates of SMI and SED were applied to each county based on the demographic characteristics that correlate with differential rates. Further information is available at the following site: http://Charles.Holzer.com
Prevalence Table 1 shows the original data that was provided by Dr. Holzer. The table shows the estimated prevalence, the total population, and the prevalence rate for three population groups: (1) the total population in the state or county; (2) the persons in households: and (3) the persons in households with an income below 200 percent of the poverty level. Since the public mental health system is intended to serve those persons who have low resources, the population below 200 percent of the poverty level can be used for planning purposes as the population that would be likely to use the public mental health system for services, if needed.
There are some limitations in using only the household population since some of the mental health client population is in skilled nursing facilities, residential treatment facilities, or board and care homes that are not considered households. However, the Census data are not available in sufficient detail to identify only those facilities. In addition, the Census data would not identify those persons who are placed out of county. There is a Census report that is available by county showing the total number or persons in “institutional and group quarters” by type of residence. This report can be referenced at the following website http://www.dof.ca.gov/search/demograpquery.htm.
Prevalence Table 2 focuses on the household population below 200 percent of poverty. The first three columns of data are the same as those on the original data showing the population and prevalence based on the 2000 Census. The last three columns are an update to this data reflecting the growth in population to 2004. The population and prevalence numbers in the first two data columns are increased by the growth rate specific to each county. The total prevalence rates stay the same.
There are limitations to this methodology in that some age groups and race/ethnic groups have higher rates of growth than others. However, these growth rates are not available in sufficient detail to apply them to the original data tables.
|Counties||Original Prevalence Data (Table 1)||Prevalence Estimates (Table 2)|
||PDF | Excel||PDF | Excel|
|Alpine||PDF | Excel||PDF | Excel|
|Amador||PDF | Excel||PDF | Excel|
|Butte||PDF | Excel||PDF | Excel|
|Calaveras||PDF | Excel||PDF | Excel|
||PDF | Excel||PDF | Excel|
|Contra Costa||PDF | Excel||PDF | Excel|
|Del Norte||PDF | Excel||PDF | Excel|
|El Dorado||PDF | Excel||PDF | Excel|
|Fresno||PDF | Excel||PDF | Excel|
|Glenn||PDF | Excel||PDF | Excel|
|Humboldt||PDF | Excel||PDF | Excel|
|Imperial||PDF | Excel||PDF | Excel|
|Inyo||PDF | Excel||PDF | Excel|
|Kern||PDF | Excel||PDF | Excel|
|Kings||PDF | Excel||PDF | Excel|
|Lake||PDF | Excel||PDF | Excel|
|Lassen||PDF | Excel||PDF | Excel|
|Los Angeles||PDF | Excel||PDF | Excel|
|Madera||PDF | Excel||PDF | Excel|
|Marin||PDF | Excel||PDF | Excel|
||PDF | Excel||PDF | Excel|
|Mendocino||PDF | Excel||PDF | Excel|
|Merced||PDF | Excel||PDF | Excel|
|Modoc||PDF | Excel||PDF | Excel|
|Mono||PDF | Excel||PDF | Excel|
|Monterey||PDF | Excel||PDF | Excel|
|Napa||PDF | Excel||PDF | Excel|
|Nevada||PDF | Excel||PDF | Excel|
|Orange||PDF | Excel||PDF | Excel|
|Placer||PDF | Excel||PDF | Excel|
|Plumas||PDF | Excel||PDF | Excel|
|Riverside||PDF | Excel||PDF | Excel|
|Sacramento||PDF | Excel||PDF | Excel|
|San Benito||PDF | Excel||PDF | Excel|
|San Bernardino||PDF | Excel||PDF | Excel|
|San Diego||PDF | Excel||PDF | Excel|
|San Francisco||PDF | Excel||PDF | Excel|
|San Joaquin||PDF | Excel||PDF | Excel|
|San Luis Obispo||PDF | Excel||PDF | Excel|
|San Mateo||PDF | Excel||PDF | Excel|
|Santa Barbara||PDF | Excel||PDF | Excel|
|Santa Clara||PDF | Excel||PDF | Excel|
|Santa Cruz||PDF | Excel||PDF | Excel|
|Shasta||PDF | Excel||PDF | Excel|
|Sierra||PDF | Excel||PDF | Excel|
|Siskiyou||PDF | Excel||PDF | Excel|
|Solano||PDF | Excel||PDF | Excel|
|Sonoma||PDF | Excel||PDF | Excel|
|Stanislaus||PDF | Excel||PDF | Excel|
|Sutter||PDF | Excel||PDF | Excel|
|Tehama||PDF | Excel||PDF | Excel|
|Trinity||PDF | Excel||PDF | Excel|
|Tulare||PDF | Excel||PDF | Excel|
|Tuolumne||PDF | Excel||PDF | Excel|
|Ventura||PDF | Excel||PDF | Excel|
|Yolo||PDF | Excel||PDF | Excel|
|Yuba||PDF | Excel||PDF | Excel|
|Statewide (CA)||PDF | Excel||PDF | Excel|