Foreign residents in Colliano

Colliano, in the province of Salerno, is home to 1 Argentinians — 0.03% of its 3,404 residents. That is the 1662nd-highest concentration of Argentinians of any of the 5,872 Italian comuni with at least 1,000 residents, and 80th within Campania.

Across the nationalities we track, Colliano counts 3 foreign residents in total, 0.09% of the population. The largest groups are Argentinians (1), Germans (1), Spaniards (1).

Over the period 2019–2025, the number of Argentinians in Colliano has risen, from 0 to 1.

Separately, ISTAT's census data shows 4.8% of Colliano's population was born outside Italy — 1.8% outside the EU and 3.0% elsewhere in the EU. ISTAT does not publish this broken down by specific country at comune level, so it isn't directly comparable to the per-nationality citizenship figures above.