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Population & demographics
All demographic data for Castano Primo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castano Primo.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Castano Primo.
Castano Primo is a medium-sized municipality in the province of Milano, Lombardia region. With a population of 10.931 inhabitants and a density of 563 per km², it covers an area of 19.4 km². The average declared income is 26.838 €.
Castano Primo in numbers: the analysis
Demographic projections to 2050 estimate about 10,275 inhabitants for Castano Primo: an expected decline of 6% from today.
Compared with the provincial average of Milano (about 24,459 residents per municipality), Castano Primo is a markedly smaller centre.
Among the 133 municipalities of the province of Milano, Castano Primo ranks 59 by population.
Castano Primo has grown substantially since 1951: from 7,102 inhabitants then to 10,931 in 2026, an increase of 53.9%.
The generational balance is in line with the norm: the ageing index of Castano Primo is 208 (over-65s per 100 under-14s).
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 11.130 |
| 2020 | 11.116 |
| 2021 | 10.980 |
| 2022 | 10.862 |
| 2023 | 10.835 |
| 2024 | 10.811 |
| 2025 | 10.882 |
| 2026 | 10.931 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 5385 | 49.3% |
| Women | 5546 | 50.7% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 62 |
| 2022 | 75 |
| 2023 | 61 |
| 2024 | 67 |
| 2025 | 68 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 7102 |
| 1961 | 8302 |
| 1971 | 9446 |
| 1981 | 9451 |
| 1991 | 9482 |
| 2001 | 9951 |
| 2011 | 10.990 |
| 2019 | 11.130 |
| 2020 | 11.116 |
| 2021 | 10.980 |
| 2022 | 10.862 |
| 2023 | 10.835 |
| 2024 | 10.811 |
| 2025 | 10.882 |
| 2026 | 10.931 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 9474 | 43.5% |
| Married | 9688 | 44.5% |
| Divorced | 844 | 3.9% |
| Widowed | 1758 | 8.1% |
School-Age Population (2026)
Total 0-18 years: 1785
| Valore | |
|---|---|
| Nido (0-2) | 198 |
| Infanzia (3-5) | 231 |
| Primaria (6-10) | 454 |
| Medie (11-13) | 317 |
| Superiori (14-18) | 585 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castano Primo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castano-primo-015062" title="Population pyramid of Castano Primo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castano-primo-015062" alt="Population pyramid of Castano Primo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>