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Index/Topics/State-Level Breakdowns of Unauthorized Immigrants

State-Level Breakdowns of Unauthorized Immigrants

State-level estimates and breakdowns of unauthorized immigrants in the U.S., including data from the Migration Policy Institute and Pew Research Center

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Jan 15, 2026
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Which U.S. counties gained the most unauthorized residents between 2019 and 2023, and what local factors explain those gains?

Migration Policy Institute analysts estimate the unauthorized immigrant population rose sharply between 2019 and mid‑2023—roughly 3 million additional people nationally—and MPI produced county‑level p...

Jan 9, 2026
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How many illegal border crossings were recorded in the US in 2023?

Official tallies of "illegal border crossings" in U.S. government reporting are recorded as "encounters," a composite measure that includes Border Patrol apprehensions, Office of Field Operations inad...