U.S. Census Bureau -- Foreign Born Population
The U.S. Census Bureau uses the term foreign born to refer to anyone who is not a U.S. citizen at birth. This includes naturalized U.S. citizens, lawful permanent residents (immigrants), temporary migrants (such as foreign students), humanitarian migrants (such as refugees), and people illegally present in the United States.
The Bureau provides a variety of demographic, social, economic, geographic, and housing information on the foreign-born population in the United States.
U.S. Dept. of Justice -- Executive Office for Immigration Review
Includes data on immigration court proceedings, decisions, appeals, asylum cases, etc.
Refugee Processing Center (U.S.)
-- Historical Arrivals Broken Down by Region (1975 – Present)
-- Cumulative Arrivals by State for Refugee and SIV (Special Immigrant Visa) - Afghan
-- Cumulative Arrivals by State for Refugee and SIV – Iraqi
-- SIV Arrivals by Nationality by Month (Posted after the 5th of the following month)
-- Top 10 Languages Spoken by Arrived Refugees (Posted Quarterly)
-- Refugee Arrivals by State and Nationality (Posted after the 5th of the following month)
-- Geographic Mapping of Arrivals