Change in foreign share across ~7,900 comuni, from ISTAT. Pan and zoom the map, or search a place to see its figure and open its full profile.
How it’s built. Percentage-point change in the tracked-nationality foreign-resident share of population, 2019 to 2025 — not the brief's aspirational 5/10-year window (same ISTAT data-vintage boundary as the population-trend layer: no data before 2019). "Foreign" here means the 25 tracked nationalities (this site's own curated definition), not all foreign residents in Italy.