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Population & demographics
All demographic data for Castelfranco di Sotto: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castelfranco di Sotto.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Castelfranco di Sotto.
Castelfranco di Sotto is a medium-sized municipality in the province of Pisa, Toscana region. With a population of 13.752 inhabitants and a density of 285 per km², it covers an area of 48.2 km². The average declared income is 23.103 €.
Castelfranco di Sotto in numbers: the analysis
Looking ahead to 2050, projections give Castelfranco di Sotto about 15,614 inhabitants, up 13.5% from today.
Among the 37 municipalities of the province of Pisa, Castelfranco di Sotto ranks 8 by population.
Castelfranco di Sotto has grown substantially since 1951: from 7,130 inhabitants then to 13,752 in 2026, an increase of 92.9%.
The generational balance is in line with the norm: the ageing index of Castelfranco di Sotto is 193 (over-65s per 100 under-14s).
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 13.252 |
| 2020 | 13.258 |
| 2021 | 13.419 |
| 2022 | 13.460 |
| 2023 | 13.560 |
| 2024 | 13.625 |
| 2025 | 13.586 |
| 2026 | 13.752 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 6946 | 50.5% |
| Women | 6806 | 49.5% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 78 |
| 2022 | 78 |
| 2023 | 101 |
| 2024 | 89 |
| 2025 | 93 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 7130 |
| 1961 | 8090 |
| 1971 | 10.359 |
| 1981 | 10.769 |
| 1991 | 10.834 |
| 2001 | 11.415 |
| 2011 | 12.904 |
| 2019 | 13.252 |
| 2020 | 13.258 |
| 2021 | 13.419 |
| 2022 | 13.460 |
| 2023 | 13.560 |
| 2024 | 13.625 |
| 2025 | 13.586 |
| 2026 | 13.752 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 11.732 | 43.2% |
| Married | 12.482 | 45.9% |
| Divorced | 1016 | 3.7% |
| Widowed | 1942 | 7.1% |
School-Age Population (2026)
Total 0-18 years: 2283
| Valore | |
|---|---|
| Nido (0-2) | 300 |
| Infanzia (3-5) | 276 |
| Primaria (6-10) | 585 |
| Medie (11-13) | 391 |
| Superiori (14-18) | 731 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castelfranco di Sotto population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castelfranco-di-sotto-050009" title="Population pyramid of Castelfranco di Sotto — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castelfranco-di-sotto-050009" alt="Population pyramid of Castelfranco di Sotto — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>