Vilnius mayor’s claim on 10% foreigner threshold for ghettos lacks scientific basis, sociologist says

A sociologist has criticised Vilnius Mayor Valdas Benkunskas for citing an unproven 10% threshold of foreign residents as the point at which urban ghettos emerge, calling the claim scientifically unfounded, LRT.lt reports.

Benkunskas has repeatedly warned that Vilnius risks forming immigrant ghettos—areas associated with higher crime, lower incomes, and deteriorating housing—once foreign residents exceed 10% of the population. City data shows 61,000 of Vilnius’s 641,204 residents are foreigners, a 9.5% share and a 39,000-person increase over six years.

When asked by LRT.lt to provide studies supporting the 10% claim, the Vilnius municipality referred to a conversation between the mayor and Indrė Gasperė, director of Lithuania’s Migration Department. Gasperė had mentioned the figure during an informal discussion with academics at a migration conference, clarifying later that it reflected an opinion rather than research-based evidence.

Sociologist Karolis Žibas, an advisor at the Diversity Development Group, dismissed the 10% threshold as “plucked from thin air,” noting that international studies identify no universal tipping point for ghetto formation. “Ghettoisation depends on factors like housing markets, income inequality, labour segregation, education systems, discrimination, and social mobility—not a simple demographic percentage,” he said. “Such claims oversimplify a complex issue into a misleading formula.”

Žibas added that Vilnius currently shows no signs of ghetto formation, as most foreign residents hold temporary permits for work or study. He cautioned against comparing the city to capitals like Berlin or Paris, where migration patterns—such as post-colonial or wartime displacement—differ significantly. Research indicates cities with similar foreign-born populations can exhibit varying segregation levels, he noted.

The sociologist also expressed concern over Lithuania’s migration debates, which he said rely more on alarmist rhetoric—terms like “tipping point,” “ghettos,” or “flood”—than on data and objective analysis.