Major Study Finds No Link Between Undocumented Immigration and Neighborhood Crime

A large new national study finds no evidence that growing populations of undocumented residents increase overall crime in U.S. neighborhoods. The research reinforces earlier, broader analyses and offers new neighborhood-level detail that many members of the public have asked for.

"Consistent with the research base more generally, unauthorized immigration does not drive crime rates in U.S. neighborhoods,"

said Charis Kubrin, the study's lead author and Chancellor's Professor of Criminology, Law and Society at the University of California, Irvine. "Honestly, I wasn't too surprised."

The paper, published in the Journal of Urban Affairs, analyzed crime trends across roughly 11,500 neighborhoods in diverse U.S. cities from 2010 through 2018. Authors include Charis Kubrin (UC Irvine), Derek Christopher (Stanford University) and John Hipp (UC Irvine).

The study's main findings were:

• Neighborhoods with rising undocumented populations tended to experience declines in property crime.
• There was no meaningful increase in total violent crime in those neighborhoods during the study period.
• One exception: robberies rose modestly where undocumented populations grew.

The authors propose an explanation for the robbery increase: many undocumented residents have limited access to bank accounts and formal financial services and therefore rely more on cash. That exposure to the cash economy may make them more likely to be targeted by robbers, rather than more likely to commit robberies.

"An increase in robberies, despite decreases in all other crime categories, would be consistent with the idea that undocumented immigrants are disproportionately likely to be targets of robbery given greater involvement in the cash economy,"

said John Hipp, a co-author from UC Irvine.

Policy Implications

Beyond the crime statistics, the authors note important policy implications. They argue that aggressive immigration enforcement can erode trust between immigrant communities and police, discourage reporting of crimes, and traumatize families — including U.S.-born children — when parents are detained or deported. Kubrin said such enforcement strategies are unlikely to improve public safety and may do more harm than good.

These findings challenge narratives that frame undocumented immigrants as a primary driver of rising crime and suggest policymakers should focus on community-based approaches that protect public safety while minimizing harm to families.

Reporting note: The study covers 2010–2018 and examines associations at the neighborhood level; it does not track individual-level criminality. As with all research, further studies can help refine understanding of mechanisms and local variations.