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RAND State Statistics
Social science data for the US at the national, state, and local levels
"Statistics include: business and economics; population and demographics; education; community; health and socioeconomic; government finance; census; politics and public opinion. Also includes an online index to RAND public policy and research publications. More than 150 additional detailed databases on CA, TX, NY."
California Statistical Abstract
Compilation of data on social, economic, and physical aspects of the State. The contributor for each table is given at the bottom of the table and may be contacted for more details or an explanation of the data.
California Statistics LibGuide
See this LibGuide for quick access to additional California statistical resources.
An independent, non-partisan, media-sponsored public opinion news service. Each year the poll covers a wide range of political and social topics examining California public opinion. Poll reports 1993-2016 archived at Internet Archive. Raw data files are available from UC Data.
PPIC Statewide Surveys (Public Policy Institute of California)
Launched in 1998 with the purpose of "providing independent, objective information on the social, economic, and political forces affecting California elections and public policy preferences."
Roper Center for Public Opinion Research
Contains domestic and international survey data. The Center's Public Opinion Location Library (iPOLL) gives online access to a database including poll questions asked in US from 1936 to present.