Every figure on GeoDwel comes from an official public source — a national statistics office, land registry, weather service or risk agency. We aggregate, we map, we cite. We never model or interpolate values.
When a source publishes no figure for a municipality — often to protect privacy in small places — we show grey and say so. We never fill gaps with estimates.
Each legend and detail row shows its source and reference year, e.g. "INSEE Filosofi 2021". When sources release new vintages, layers update and the citation changes with them.