Your fact-checks

Your fact-checks will appear here

factually
Support us
  • Home
  • Politics
  • Business
  • Society
  • Technology
  • Health
  • Science
  • Entertainment
Index/Topics/Survey Undercount

Survey Undercount

The issue of undercount in surveys and its impact on the estimation of the unauthorized immigrant population.

Fact-Checks

1 result
Jan 27, 2026

How does Pew Research estimate unauthorized immigrants by state and how does that differ from MPI methods?

Both the and the rely on variants of the well‑established “residual” approach—subtracting an estimated lawful foreign‑born population from total foreign‑born counts—but they implement that core idea d...

About
Blog
Contact
FAQ
Terms & ConditionsTerms
Privacy PolicyPrivacy
Manage data