Unauthorized Migrants: Numbers and Characteristics

This report examines the characteristics and demographics of the unauthorized immigrant population in the United States as of 2004. 

This report was developed as a briefing paper for MPI's Independent Task Force on Immigration and America’s Future, co-chaired by former Senator Spencer Abraham (R-MI) and former Congressman Lee Hamilton (D-IN).

The bipartisan task force has been convened by MPI in partnership with the Manhattan Institute and the Woodrow Wilson International Center for Scholars. 

An estimated 10.3 million unauthorized immigrants lived in the United States in 2004, with net growth averaging 450,000 per year between 1990-94 and accelerating to 750,000 a year between 1995-99. Contrary to stereotype, most unauthorized immigrants lived in families, one-quarter had at least some college education, and they worked across many sectors of the U.S. economy, not just low-wage industries.

About the Independent Task Force on Immigration and America’s Future

This high-level, bipartisan task force developed a comprehensive post-9/11 blueprint to redesign the U.S. immigration system with flexibility, smart enforcement, and a robust integration policy.

About the U.S. Immigration Policy Program

The U.S. Immigration Policy Program provides analysis of U.S. immigration pathways, the impacts of enforcement and other policies, and the characteristics of immigrant populations.