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Population & demographics
All demographic data for Chianciano Terme: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Chianciano Terme.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Chianciano Terme.
Chianciano Terme is a medium-sized municipality in the province of Siena, Toscana region. With a population of 7143 inhabitants and a density of 194 per km², it covers an area of 36.8 km². The average declared income is 20.836 €.
Chianciano Terme in numbers: the analysis
Chianciano Terme has grown substantially since 1951: from 4,548 inhabitants then to 7,143 in 2026, an increase of 57.1%.
The ageing index is one of the starkest signals: in Chianciano Terme there are 320 residents over 65 for every 100 under 14, well above the national average.
Looking ahead to 2050, projections give Chianciano Terme about 7,600 inhabitants, up 6.4% from today.
Among the 35 municipalities of the province of Siena, Chianciano Terme ranks 12 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 7015 |
| 2020 | 6932 |
| 2021 | 6813 |
| 2022 | 6848 |
| 2023 | 6937 |
| 2024 | 6990 |
| 2025 | 7096 |
| 2026 | 7143 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 3673 | 51.4% |
| Women | 3470 | 48.6% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 35 |
| 2022 | 25 |
| 2023 | 33 |
| 2024 | 24 |
| 2025 | 36 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 4548 |
| 1961 | 5489 |
| 1971 | 6788 |
| 1981 | 7285 |
| 1991 | 7445 |
| 2001 | 6955 |
| 2011 | 7058 |
| 2019 | 7015 |
| 2020 | 6932 |
| 2021 | 6813 |
| 2022 | 6848 |
| 2023 | 6937 |
| 2024 | 6990 |
| 2025 | 7096 |
| 2026 | 7143 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 6502 | 45.8% |
| Married | 5662 | 39.9% |
| Divorced | 742 | 5.2% |
| Widowed | 1286 | 9.1% |
School-Age Population (2026)
Total 0-18 years: 856
| Valore | |
|---|---|
| Nido (0-2) | 95 |
| Infanzia (3-5) | 103 |
| Primaria (6-10) | 230 |
| Medie (11-13) | 142 |
| Superiori (14-18) | 286 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Chianciano Terme population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/chianciano-terme-052009" title="Population pyramid of Chianciano Terme — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/chianciano-terme-052009" alt="Population pyramid of Chianciano Terme — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>