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Population & demographics
All demographic data for Castiglione d'Orcia: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castiglione d'Orcia.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Castiglione d'Orcia.
Castiglione d'Orcia is a small municipality in the province of Siena, Toscana region. With a population of 2046 inhabitants and a density of 14 per km², it covers an area of 141.8 km². The average declared income is 23.198 €.
Castiglione d'Orcia in numbers: the analysis
Demographic projections to 2050 estimate about 1,502 inhabitants for Castiglione d'Orcia: an expected decline of 26.6% from today.
Compared with the provincial average of Siena (about 7,414 residents per municipality), Castiglione d'Orcia is a markedly smaller centre.
Among the 35 municipalities of the province of Siena, Castiglione d'Orcia ranks 27 by population.
The census record tells a story of long decline: in 1951 Castiglione d'Orcia had 5,244 inhabitants; today (2026) it has 2,046 — 61% fewer.
The ageing index is one of the starkest signals: in Castiglione d'Orcia there are 469 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 2239 |
| 2020 | 2227 |
| 2021 | 2157 |
| 2022 | 2148 |
| 2023 | 2140 |
| 2024 | 2114 |
| 2025 | 2081 |
| 2026 | 2046 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1016 | 49.7% |
| Women | 1030 | 50.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 10 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 9 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 5244 |
| 1961 | 4650 |
| 1971 | 3573 |
| 1981 | 3158 |
| 1991 | 2840 |
| 2001 | 2508 |
| 2011 | 2453 |
| 2019 | 2239 |
| 2020 | 2227 |
| 2021 | 2157 |
| 2022 | 2148 |
| 2023 | 2140 |
| 2024 | 2114 |
| 2025 | 2081 |
| 2026 | 2046 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 1628 | 39.1% |
| Married | 1852 | 44.5% |
| Divorced | 180 | 4.3% |
| Widowed | 502 | 12.1% |
School-Age Population (2026)
Total 0-18 years: 226
| Valore | |
|---|---|
| Nido (0-2) | 20 |
| Infanzia (3-5) | 29 |
| Primaria (6-10) | 56 |
| Medie (11-13) | 34 |
| Superiori (14-18) | 87 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castiglione d'Orcia population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castiglione-d-orcia-052007" title="Population pyramid of Castiglione d'Orcia — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castiglione-d-orcia-052007" alt="Population pyramid of Castiglione d'Orcia — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>