Download

All DEMOPAST data is available for direct download below, for each of the seven census years (1861, 1871, 1881, 1901, 1911, 1921, 1931): the long-format adjusted-age census tabulation and the province boundary shapes as GeoJSON.

Census tables — long format (adjusted age)

One row per (province, age class, sex) combination, harmonised across years to a common 19-group age classification. These are the canonical source tables; everything else on the site is computed from them.

Columns: code (COD_PROV, integer), province (modern name), age_class (0, 1-4, 5-9, …, 85+), male, female, total.

Year	File	Size
1861	data_census_1861_adjusted_age.csv	46 KB
1871	data_census_1871_adjusted_age.csv	55 KB
1881	data_census_1881_adjusted_age.csv	51 KB
1901	data_census_1901_adjusted_age.csv	44 KB
1911	data_census_1911_adjusted_age.csv	52 KB
1921	data_census_1921_adjusted_age.csv	53 KB
1931	data_census_1931_adjusted_age.csv	67 KB

Province boundaries — GeoJSON

Historical province polygons reprojected to WGS84 (EPSG:4326) and simplified to ~500 m tolerance. Source shapefiles come from the ISTAT Confini statistico-amministrativi: analisi storica collection. Each feature exposes COD_PROV (integer) and DEN_PROV (historical name), which join cleanly with the CSVs above.

Year	File	Size	Provinces
1861	province_1861.geojson	517 KB	59
1871	province_1871.geojson	591 KB	70
1881	province_1881.geojson	589 KB	68
1901	province_1901.geojson	588 KB	69
1911	province_1911.geojson	588 KB	69
1921	province_1921.geojson	619 KB	69
1931	province_1931.geojson	583 KB	89

Citation

If you use DEMOPAST data in published work, please cite the project as follows:

Barban, N., Raftakis, M., Lionello, L., Maselli, L., & Omenti, R. (2026). DEMOPAST: Italian Historical Demographic Atlas. GENPOP project. demopast.it

Source census data comes from the Istituto Nazionale di Statistica (ISTAT); historical administrative boundaries come from ISTAT’s Confini statistico-amministrativi: analisi storica.