Explore related data
Jump from local statistics to linked rankings and territorial pages.
Region page
Open the full profile page for Lombardia.
Province page
Open the full profile page for the province of Sondrio.
Income overview
Explore the income map and the municipalities with the highest and lowest values.
Regional income ranking
View the municipalities in Lombardia ranked by average income.
Provincial population ranking
View the municipalities in the province of Sondrio ranked by population.
Compare this municipality
Open the comparison page with this municipality preselected.
Population & demographics
All demographic data for Sondalo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Sondalo.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Sondalo.
Sondalo is a small municipality in the province of Sondrio, Lombardia region. With a population of 3859 inhabitants and a density of 40 per km², it covers an area of 95.7 km². The average declared income is 22.277 €.
Sondalo in numbers: the analysis
The ageing index is one of the starkest signals: in Sondalo there are 276 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 3,229 inhabitants for Sondalo: an expected decline of 16.3% from today.
The average municipality in the province of Sondrio has about 2,328 residents: Sondalo has 1.7 times as many.
Among the 77 municipalities of the province of Sondrio, Sondalo ranks 13 by population.
The census record tells a story of long decline: in 1951 Sondalo had 4,806 inhabitants; today (2026) it has 3,859 — 19.7% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 4065 |
| 2020 | 4027 |
| 2021 | 3970 |
| 2022 | 3930 |
| 2023 | 3913 |
| 2024 | 3863 |
| 2025 | 3876 |
| 2026 | 3859 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1922 | 49.8% |
| Women | 1937 | 50.2% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 18 |
| 2022 | 27 |
| 2023 | 21 |
| 2024 | 21 |
| 2025 | 21 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 4806 |
| 1961 | 5434 |
| 1971 | 5728 |
| 1981 | 5217 |
| 1991 | 4954 |
| 2001 | 4499 |
| 2011 | 4237 |
| 2019 | 4065 |
| 2020 | 4027 |
| 2021 | 3970 |
| 2022 | 3930 |
| 2023 | 3913 |
| 2024 | 3863 |
| 2025 | 3876 |
| 2026 | 3859 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3576 | 46.1% |
| Married | 3012 | 38.9% |
| Divorced | 394 | 5.1% |
| Widowed | 770 | 9.9% |
School-Age Population (2026)
Total 0-18 years: 524
| Valore | |
|---|---|
| Nido (0-2) | 65 |
| Infanzia (3-5) | 74 |
| Primaria (6-10) | 119 |
| Medie (11-13) | 98 |
| Superiori (14-18) | 168 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Sondalo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/sondalo-014060" title="Population pyramid of Sondalo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/sondalo-014060" alt="Population pyramid of Sondalo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>