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"The Pew Research Center’s Hispanic Trends Project, launched in 2001 as the Pew Hispanic Center, seeks to improve public understanding of the diverse Hispanic population in the United States and to chronicle Latinos’ growing impact on the nation. The project conducts public opinion surveys ...including its annual National Survey of Latinos. It also publishes demographic studies and other social science research on a wide range of topics..."
The U.S. Census Bureau web page links to the latest The Hispanic Population in the United States, plus other reports and data on the U.S. Latino population from the Census and the American Community Survey.
The Social Explorer produces maps and reports of US Census Tract level data from 1940-2000. Using high quality maps and data, they make available the full contents of the tract data for the United States for the full period. Reports include aggregated totals and the system allows for slideshows demonstrating change over time. The data can also be exported as excel spreadsheets for easy reuse.
"The Latin American Migration Project (LAMP) is a multidisciplinary research effort between investigators in various countries of Latin America and the United States. LAMP is currently based at Princeton University and the University of Guadalajara. The LAMP was born as an extension of the Mexican Migration Project (MMP), which was created in 1982 by an interdisciplinary team of researchers to advance our understanding of the complex processes of international migration and immigration to the United States."
Statistical information on the United States, for the colonial era and 1790-2000. Presents 37,339 data series on population (including vital statistics, immigration and emigration), work and welfare (including labor, slavery, education, health, economic inequality and poverty, social insurance and public assistance), economic structure and performance, business cycles, prices, etc.
Part of ICPSR (Inter-University Consortium for Political & Social Research) the "mission for ...RCMD is to provide educators, researchers, and students with data resources so that they can produce analysis of issues affecting racial and ethnic minority populations in the United States. RCMD provides access and analytic tools enhancements to use of the vast array of available data. The archive collection allows researchers to track changes in outcomes and status of minority populations and contributing factors."