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Population & demographics
All demographic data for Marzio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Marzio.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Marzio.
Marzio is a small municipality in the province of Varese, Lombardia region. With a population of 311 inhabitants and a density of 167 per km², it covers an area of 1.9 km². The average declared income is 19.318 €.
Marzio in numbers: the analysis
Demographic projections to 2050 estimate about 234 inhabitants for Marzio: an expected decline of 24.8% from today.
Compared with the provincial average of Varese (about 6,506 residents per municipality), Marzio is a markedly smaller centre.
Among the 136 municipalities of the province of Varese, Marzio ranks 132 by population.
Marzio has grown substantially since 1951: from 272 inhabitants then to 311 in 2026, an increase of 14.3%.
The generational balance is in line with the norm: the ageing index of Marzio is 246 (over-65s per 100 under-14s).
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 338 |
| 2020 | 316 |
| 2021 | 311 |
| 2022 | 310 |
| 2023 | 308 |
| 2024 | 305 |
| 2025 | 313 |
| 2026 | 311 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 166 | 53.4% |
| Women | 145 | 46.6% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 0 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 272 |
| 1961 | 249 |
| 1971 | 273 |
| 1981 | 255 |
| 1991 | 282 |
| 2001 | 287 |
| 2011 | 303 |
| 2019 | 338 |
| 2020 | 316 |
| 2021 | 311 |
| 2022 | 310 |
| 2023 | 308 |
| 2024 | 305 |
| 2025 | 313 |
| 2026 | 311 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 262 | 41.9% |
| Married | 310 | 49.5% |
| Divorced | 12 | 1.9% |
| Widowed | 42 | 6.7% |
School-Age Population (2026)
Total 0-18 years: 43
| Valore | |
|---|---|
| Nido (0-2) | 10 |
| Infanzia (3-5) | 6 |
| Primaria (6-10) | 13 |
| Medie (11-13) | 5 |
| Superiori (14-18) | 9 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Marzio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/marzio-012099" title="Population pyramid of Marzio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/marzio-012099" alt="Population pyramid of Marzio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>