Migration Research Resources

The Institute for Immigration Research (IIR) makes its research and Immigration Data on Demand (iDod) fact sheets publicly available for your migration-related research and information. For your research needs that extend beyond the IIR's available resources, we recommend the following additional resources: 

U.S. Immigration Data Sources


IPUMS USA: This is a source of US Census data for social, economic, and health research. IPUMS USA collects, preserves, and harmonizes U.S. census microdata and provides easy access to this data with enhanced documentation. Data includes decennial censuses from 1790-2010 and American Community Surveys (ACS) from 2000 to the present.

Social Explorer: Provides data and data visualizations on a wide range of topics.

Immigration Data Matters: This useful online guide published by the Migration Policy Institute links users directly to the most credible, high-quality data on immigrants and immigration in the United States and internationally. The easy-to-use publication includes more than 250 data resources compiled by governmental and authoritative nongovernmental sources. The guide covers a wide range of topics, among them foreign-born population stocks and flows, humanitarian and labor migration, naturalization, education and language attainment, labor force participation, income and poverty rates, remittance size and flow, immigration enforcement actions, public opinion, religious affiliation, and development indicators.

Office of Immigration Statistics: The Department of Homeland Security’s Office of Immigration Statistics (OIS) leads the collection and dissemination to Congress and the public of statistical information and analysis useful in evaluating the social, economic, environmental, and demographic impact of immigration laws, migration flows, and immigration enforcement. The Office establishes standards of reliability and validity for the Department’s immigration statistics. The Office also develops other immigration-related reports and conducts research at the direction of the Secretary.

Frequently Requested Statistics on Immigrants and Immigration in the United States: This resource from Migration Policy Institute contains data on the sociodemographic and economic characteristics of immigrants in the U.S.

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