Explore related data
Jump from local statistics to linked rankings and territorial pages.
Region page
Open the full profile page for Toscana.
Province page
Open the full profile page for the province of Siena.
Income overview
Explore the income map and the municipalities with the highest and lowest values.
Regional income ranking
View the municipalities in Toscana ranked by average income.
Provincial population ranking
View the municipalities in the province of Siena ranked by population.
Compare this municipality
Open the comparison page with this municipality preselected.
Population & demographics
All demographic data for Sarteano: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Sarteano.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Sarteano.
Sarteano is a small municipality in the province of Siena, Toscana region. With a population of 4494 inhabitants and a density of 53 per km², it covers an area of 84.6 km². The average declared income is 21.632 €.
Sarteano in numbers: the analysis
Among the 35 municipalities of the province of Siena, Sarteano ranks 18 by population.
Over the long run the population of Sarteano has stayed essentially stable: 4,702 inhabitants in 1951, 4,494 in 2026 (less than 5% change).
The ageing index is one of the starkest signals: in Sarteano there are 285 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 4,036 inhabitants for Sarteano: an expected decline of 10.2% from today.
Compared with the provincial average of Siena (about 7,414 residents per municipality), Sarteano is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 4637 |
| 2020 | 4606 |
| 2021 | 4528 |
| 2022 | 4476 |
| 2023 | 4485 |
| 2024 | 4542 |
| 2025 | 4515 |
| 2026 | 4494 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 2186 | 48.6% |
| Women | 2308 | 51.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 25 |
| 2022 | 25 |
| 2023 | 21 |
| 2024 | 24 |
| 2025 | 26 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 4702 |
| 1961 | 4253 |
| 1971 | 3759 |
| 1981 | 4282 |
| 1991 | 4378 |
| 2001 | 4535 |
| 2011 | 4741 |
| 2019 | 4637 |
| 2020 | 4606 |
| 2021 | 4528 |
| 2022 | 4476 |
| 2023 | 4485 |
| 2024 | 4542 |
| 2025 | 4515 |
| 2026 | 4494 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3908 | 43.3% |
| Married | 3982 | 44.1% |
| Divorced | 372 | 4.1% |
| Widowed | 768 | 8.5% |
School-Age Population (2026)
Total 0-18 years: 650
| Valore | |
|---|---|
| Nido (0-2) | 64 |
| Infanzia (3-5) | 79 |
| Primaria (6-10) | 165 |
| Medie (11-13) | 123 |
| Superiori (14-18) | 219 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Sarteano population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/sarteano-052031" title="Population pyramid of Sarteano — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/sarteano-052031" alt="Population pyramid of Sarteano — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>