Castel di Casio: 3348 inhabitants (2026)
ISTAT Code: 037015
44.1631°N, 11.0364°E
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Population & demographics
All demographic data for Castel di Casio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castel di Casio.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Castel di Casio.
Castel di Casio is a small municipality in the province of Bologna, Emilia-Romagna region. With a population of 3348 inhabitants and a density of 70 per km², it covers an area of 47.6 km². The average declared income is 25.445 €.
Castel di Casio in numbers: the analysis
Compared with the provincial average of Bologna (about 18,623 residents per municipality), Castel di Casio is a markedly smaller centre.
Among the 55 municipalities of the province of Bologna, Castel di Casio ranks 49 by population.
The census record tells a story of long decline: in 1951 Castel di Casio had 3,913 inhabitants; today (2026) it has 3,348 — 14.4% fewer.
The ageing index is one of the starkest signals: in Castel di Casio there are 289 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 3,081 inhabitants for Castel di Casio: an expected decline of 8% from today.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 3430 |
| 2020 | 3378 |
| 2021 | 3307 |
| 2022 | 3309 |
| 2023 | 3307 |
| 2024 | 3322 |
| 2025 | 3361 |
| 2026 | 3348 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1661 | 49.6% |
| Women | 1687 | 50.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 20 |
| 2022 | 15 |
| 2023 | 16 |
| 2024 | 20 |
| 2025 | 20 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 3913 |
| 1961 | 3008 |
| 1971 | 2474 |
| 1981 | 2667 |
| 1991 | 2833 |
| 2001 | 3174 |
| 2011 | 3479 |
| 2019 | 3430 |
| 2020 | 3378 |
| 2021 | 3307 |
| 2022 | 3309 |
| 2023 | 3307 |
| 2024 | 3322 |
| 2025 | 3361 |
| 2026 | 3348 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2806 | 41.7% |
| Married | 3048 | 45.3% |
| Divorced | 302 | 4.5% |
| Widowed | 566 | 8.4% |
School-Age Population (2026)
Total 0-18 years: 448
| Valore | |
|---|---|
| Nido (0-2) | 55 |
| Infanzia (3-5) | 66 |
| Primaria (6-10) | 109 |
| Medie (11-13) | 69 |
| Superiori (14-18) | 149 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castel di Casio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castel-di-casio-037015" title="Population pyramid of Castel di Casio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castel-di-casio-037015" alt="Population pyramid of Castel di Casio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>