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Population & demographics
All demographic data for Trezzano Rosa: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Trezzano Rosa.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Trezzano Rosa.
Trezzano Rosa is a medium-sized municipality in the province of Milano, Lombardia region. With a population of 5444 inhabitants and a density of 1660 per km², it covers an area of 3.3 km². The average declared income is 27.521 €.
Trezzano Rosa in numbers: the analysis
Looking ahead to 2050, projections give Trezzano Rosa about 6,782 inhabitants, up 24.6% from today.
Compared with the provincial average of Milano (about 24,459 residents per municipality), Trezzano Rosa is a markedly smaller centre.
Among the 133 municipalities of the province of Milano, Trezzano Rosa ranks 98 by population.
Trezzano Rosa has grown substantially since 1951: from 1,374 inhabitants then to 5,444 in 2026, an increase of 296.2%.
The generational balance is in line with the norm: the ageing index of Trezzano Rosa is 166 (over-65s per 100 under-14s).
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 5106 |
| 2020 | 5186 |
| 2021 | 5297 |
| 2022 | 5374 |
| 2023 | 5379 |
| 2024 | 5383 |
| 2025 | 5423 |
| 2026 | 5444 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 2736 | 50.3% |
| Women | 2708 | 49.7% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 32 |
| 2022 | 33 |
| 2023 | 36 |
| 2024 | 31 |
| 2025 | 30 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1374 |
| 1961 | 1335 |
| 1971 | 1347 |
| 1981 | 1473 |
| 1991 | 2344 |
| 2001 | 3760 |
| 2011 | 4861 |
| 2019 | 5106 |
| 2020 | 5186 |
| 2021 | 5297 |
| 2022 | 5374 |
| 2023 | 5379 |
| 2024 | 5383 |
| 2025 | 5423 |
| 2026 | 5444 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 4964 | 45.8% |
| Married | 4830 | 44.5% |
| Divorced | 460 | 4.2% |
| Widowed | 592 | 5.5% |
School-Age Population (2026)
Total 0-18 years: 933
| Valore | |
|---|---|
| Nido (0-2) | 95 |
| Infanzia (3-5) | 101 |
| Primaria (6-10) | 240 |
| Medie (11-13) | 178 |
| Superiori (14-18) | 319 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Trezzano Rosa population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/trezzano-rosa-015219" title="Population pyramid of Trezzano Rosa — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/trezzano-rosa-015219" alt="Population pyramid of Trezzano Rosa — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>