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Population & demographics
All demographic data for Arosio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Arosio.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Arosio.
Arosio is a medium-sized municipality in the province of Como, Lombardia region. With a population of 5227 inhabitants and a density of 1929 per km², it covers an area of 2.7 km². The average declared income is 26.083 €.
Arosio in numbers: the analysis
Arosio has grown substantially since 1951: from 2,195 inhabitants then to 5,227 in 2026, an increase of 138.1%.
Among the 147 municipalities of the province of Como, Arosio ranks 32 by population.
Looking ahead to 2050, projections give Arosio about 5,749 inhabitants, up 10% from today.
The generational balance is in line with the norm: the ageing index of Arosio is 187 (over-65s per 100 under-14s).
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 5084 |
| 2020 | 5139 |
| 2021 | 5106 |
| 2022 | 5114 |
| 2023 | 5163 |
| 2024 | 5136 |
| 2025 | 5187 |
| 2026 | 5227 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 2592 | 49.6% |
| Women | 2635 | 50.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 53 |
| 2022 | 35 |
| 2023 | 30 |
| 2024 | 32 |
| 2025 | 27 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 2195 |
| 1961 | 2622 |
| 1971 | 3548 |
| 1981 | 3662 |
| 1991 | 4271 |
| 2001 | 4469 |
| 2011 | 4987 |
| 2019 | 5084 |
| 2020 | 5139 |
| 2021 | 5106 |
| 2022 | 5114 |
| 2023 | 5163 |
| 2024 | 5136 |
| 2025 | 5187 |
| 2026 | 5227 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 4654 | 44.9% |
| Married | 4594 | 44.3% |
| Divorced | 348 | 3.4% |
| Widowed | 778 | 7.5% |
School-Age Population (2026)
Total 0-18 years: 911
| Valore | |
|---|---|
| Nido (0-2) | 93 |
| Infanzia (3-5) | 128 |
| Primaria (6-10) | 233 |
| Medie (11-13) | 164 |
| Superiori (14-18) | 293 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Arosio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/arosio-013012" title="Population pyramid of Arosio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/arosio-013012" alt="Population pyramid of Arosio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>