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Index/Topics/Demographic research on unauthorized immigrants

Demographic research on unauthorized immigrants

Demographic research groups like Pew estimate the population of unauthorized immigrants using surveys and administrative records.

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3 results
Jan 9, 2026
Most Viewed

Number of illegals entering the US 2021 to 2024

Customs and Border Protection (CBP) recorded more than 10.8 million “encounters” nationwide from the start of Fiscal Year (FY) 2021 through the end of FY2024, with over 8.7 million of those at the Sou...

Jan 25, 2026

How did Pew Research estimate state unauthorized immigrant populations for 2023, and what are the methodological limitations?

’s 2023 state-level estimates of the are built from survey data (primarily the ), adjusted with administrative records and demographic corrections, and then reweighted to account for recent revisions ...

Jan 6, 2026

What methodologies produce the large disparities between FAIR’s 18.6M estimate and Pew’s 14M estimate of unauthorized residents?

The gulf between FAIR’s 18.6 million figure and Pew’s 14 million estimate of unauthorized residents flows from methodological choices about data sources, timing, who is counted as “unauthorized,” and ...

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