Peak-month visitors per resident across ~7,900 comuni, from ISTAT. Pan and zoom the map, or search a place to see its figure and open its full profile.
Download. CSV · JSON · checksums. An empty CSV cell means the source has no figure for that place, never zero.
How it’s built. The comune's busiest month's tourist-accommodation nights spent (presenze), divided by the number of days in that month, divided by the comune's resident population (comuni.json, most recently published year — one year newer than this metric's own 2024 tourism figures, a real vintage mismatch). Reads as: on an average night in this comune's busiest month, this many overnight tourists are present for every resident — 0.16 means 16 tourists per 100 residents, so the night-time population is 1.16 times the resident one (it is a ratio of visitors to residents, not a multiplier of the population). Registered commercial accommodation only, set against the residents of the whole comune, so a large comune with a small tourist core reads lower than its busiest streets feel. Same source and year-selection reasoning as the seasonality index above.