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Population & demographics
All demographic data for Castelseprio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castelseprio.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Castelseprio.
Castelseprio is a small municipality in the province of Varese, Lombardia region. With a population of 1330 inhabitants and a density of 350 per km², it covers an area of 3.8 km². The average declared income is 28.092 €.
Castelseprio in numbers: the analysis
Looking ahead to 2050, projections give Castelseprio about 1,408 inhabitants, up 5.9% from today.
Compared with the provincial average of Varese (about 6,506 residents per municipality), Castelseprio is a markedly smaller centre.
Among the 136 municipalities of the province of Varese, Castelseprio ranks 108 by population.
Castelseprio has grown substantially since 1951: from 732 inhabitants then to 1,330 in 2026, an increase of 81.7%.
The generational balance is in line with the norm: the ageing index of Castelseprio is 235 (over-65s per 100 under-14s).
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 1308 |
| 2020 | 1301 |
| 2021 | 1297 |
| 2022 | 1309 |
| 2023 | 1320 |
| 2024 | 1331 |
| 2025 | 1332 |
| 2026 | 1330 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 654 | 49.2% |
| Women | 676 | 50.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 10 |
| 2022 | 9 |
| 2023 | 10 |
| 2024 | 14 |
| 2025 | 6 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 732 |
| 1961 | 866 |
| 1971 | 923 |
| 1981 | 1077 |
| 1991 | 1097 |
| 2001 | 1237 |
| 2011 | 1281 |
| 2019 | 1308 |
| 2020 | 1301 |
| 2021 | 1297 |
| 2022 | 1309 |
| 2023 | 1320 |
| 2024 | 1331 |
| 2025 | 1332 |
| 2026 | 1330 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 1102 | 41.4% |
| Married | 1256 | 47.1% |
| Divorced | 110 | 4.1% |
| Widowed | 196 | 7.4% |
School-Age Population (2026)
Total 0-18 years: 202
| Valore | |
|---|---|
| Nido (0-2) | 27 |
| Infanzia (3-5) | 33 |
| Primaria (6-10) | 48 |
| Medie (11-13) | 28 |
| Superiori (14-18) | 66 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castelseprio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castelseprio-012044" title="Population pyramid of Castelseprio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castelseprio-012044" alt="Population pyramid of Castelseprio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>