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Population & demographics
All demographic data for San Quirico d'Orcia: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for San Quirico d'Orcia.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for San Quirico d'Orcia.
San Quirico d'Orcia is a small municipality in the province of Siena, Toscana region. With a population of 2530 inhabitants and a density of 60 per km², it covers an area of 42.4 km². The average declared income is 24.048 €.
San Quirico d'Orcia in numbers: the analysis
Among the 35 municipalities of the province of Siena, San Quirico d'Orcia ranks 23 by population.
Compared with the provincial average of Siena (about 7,414 residents per municipality), San Quirico d'Orcia is a markedly smaller centre.
Demographic projections to 2050 estimate about 2,289 inhabitants for San Quirico d'Orcia: an expected decline of 9.5% from today.
The generational balance is in line with the norm: the ageing index of San Quirico d'Orcia is 244 (over-65s per 100 under-14s).
San Quirico d'Orcia has grown substantially since 1951: from 2,332 inhabitants then to 2,530 in 2026, an increase of 8.5%.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 2605 |
| 2020 | 2623 |
| 2021 | 2636 |
| 2022 | 2610 |
| 2023 | 2581 |
| 2024 | 2587 |
| 2025 | 2560 |
| 2026 | 2530 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1231 | 48.7% |
| Women | 1299 | 51.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 28 |
| 2022 | 16 |
| 2023 | 25 |
| 2024 | 18 |
| 2025 | 10 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 2332 |
| 1961 | 2297 |
| 1971 | 2261 |
| 1981 | 2233 |
| 1991 | 2389 |
| 2001 | 2463 |
| 2011 | 2680 |
| 2019 | 2605 |
| 2020 | 2623 |
| 2021 | 2636 |
| 2022 | 2610 |
| 2023 | 2581 |
| 2024 | 2587 |
| 2025 | 2560 |
| 2026 | 2530 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2196 | 42.9% |
| Married | 2302 | 45.0% |
| Divorced | 210 | 4.1% |
| Widowed | 412 | 8.0% |
School-Age Population (2026)
Total 0-18 years: 378
| Valore | |
|---|---|
| Nido (0-2) | 53 |
| Infanzia (3-5) | 55 |
| Primaria (6-10) | 100 |
| Medie (11-13) | 47 |
| Superiori (14-18) | 123 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the San Quirico d'Orcia population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/san-quirico-d-orcia-052030" title="Population pyramid of San Quirico d'Orcia — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/san-quirico-d-orcia-052030" alt="Population pyramid of San Quirico d'Orcia — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>