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Population & demographics
All demographic data for Castellero: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castellero.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Castellero.
Castellero is a small municipality in the province of Asti, Piemonte region. With a population of 281 inhabitants and a density of 64 per km², it covers an area of 4.4 km². The average declared income is 27.352 €.
Castellero in numbers: the analysis
The generational balance is in line with the norm: the ageing index of Castellero is 231 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 243 inhabitants for Castellero: an expected decline of 13.5% from today.
Compared with the provincial average of Asti (about 1,770 residents per municipality), Castellero is a markedly smaller centre.
Among the 117 municipalities of the province of Asti, Castellero ranks 101 by population.
The census record tells a story of long decline: in 1951 Castellero had 299 inhabitants; today (2026) it has 281 — 6% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 293 |
| 2020 | 304 |
| 2021 | 294 |
| 2022 | 291 |
| 2023 | 278 |
| 2024 | 289 |
| 2025 | 292 |
| 2026 | 281 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 134 | 47.7% |
| Women | 147 | 52.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 6 |
| 2025 | 1 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 299 |
| 1961 | 268 |
| 1971 | 265 |
| 1981 | 243 |
| 1991 | 281 |
| 2001 | 291 |
| 2011 | 302 |
| 2019 | 293 |
| 2020 | 304 |
| 2021 | 294 |
| 2022 | 291 |
| 2023 | 278 |
| 2024 | 289 |
| 2025 | 292 |
| 2026 | 281 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 230 | 39.4% |
| Married | 280 | 47.9% |
| Divorced | 24 | 4.1% |
| Widowed | 50 | 8.6% |
School-Age Population (2026)
Total 0-18 years: 48
| Valore | |
|---|---|
| Nido (0-2) | 8 |
| Infanzia (3-5) | 6 |
| Primaria (6-10) | 12 |
| Medie (11-13) | 8 |
| Superiori (14-18) | 14 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castellero population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castellero-005026" title="Population pyramid of Castellero — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castellero-005026" alt="Population pyramid of Castellero — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>