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Population & demographics
All demographic data for Grosio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Grosio.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Grosio.
Grosio is a small municipality in the province of Sondrio, Lombardia region. With a population of 4230 inhabitants and a density of 33 per km², it covers an area of 127.0 km². The average declared income is 22.823 €.
Grosio in numbers: the analysis
Demographic projections to 2050 estimate about 3,681 inhabitants for Grosio: an expected decline of 13% from today.
The average municipality in the province of Sondrio has about 2,328 residents: Grosio has 1.8 times as many.
Among the 77 municipalities of the province of Sondrio, Grosio ranks 9 by population.
The census record tells a story of long decline: in 1951 Grosio had 4,495 inhabitants; today (2026) it has 4,230 — 5.9% fewer.
The ageing index is one of the starkest signals: in Grosio there are 260 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 4405 |
| 2020 | 4457 |
| 2021 | 4412 |
| 2022 | 4371 |
| 2023 | 4342 |
| 2024 | 4294 |
| 2025 | 4260 |
| 2026 | 4230 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 2030 | 48.0% |
| Women | 2200 | 52.0% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 26 |
| 2022 | 30 |
| 2023 | 22 |
| 2024 | 30 |
| 2025 | 19 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 4495 |
| 1961 | 4598 |
| 1971 | 4676 |
| 1981 | 4781 |
| 1991 | 4966 |
| 2001 | 4827 |
| 2011 | 4619 |
| 2019 | 4405 |
| 2020 | 4457 |
| 2021 | 4412 |
| 2022 | 4371 |
| 2023 | 4342 |
| 2024 | 4294 |
| 2025 | 4260 |
| 2026 | 4230 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3482 | 40.9% |
| Married | 3994 | 46.9% |
| Divorced | 226 | 2.7% |
| Widowed | 818 | 9.6% |
School-Age Population (2026)
Total 0-18 years: 619
| Valore | |
|---|---|
| Nido (0-2) | 73 |
| Infanzia (3-5) | 86 |
| Primaria (6-10) | 173 |
| Medie (11-13) | 103 |
| Superiori (14-18) | 184 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Grosio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/grosio-014033" title="Population pyramid of Grosio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/grosio-014033" alt="Population pyramid of Grosio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>