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Population & demographics
All demographic data for Costanzana: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Costanzana.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Costanzana.
Costanzana is a small municipality in the province of Vercelli, Piemonte region. With a population of 815 inhabitants and a density of 40 per km², it covers an area of 20.3 km². The average declared income is 23.037 €.
Costanzana in numbers: the analysis
The census record tells a story of long decline: in 1951 Costanzana had 1,839 inhabitants; today (2026) it has 815 — 55.7% fewer.
The ageing index is one of the starkest signals: in Costanzana there are 269 residents over 65 for every 100 under 14, well above the national average.
Looking ahead to 2050, projections give Costanzana about 1,022 inhabitants, up 25.4% from today.
Compared with the provincial average of Vercelli (about 2,026 residents per municipality), Costanzana is a markedly smaller centre.
Among the 82 municipalities of the province of Vercelli, Costanzana ranks 36 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 763 |
| 2020 | 746 |
| 2021 | 748 |
| 2022 | 761 |
| 2023 | 765 |
| 2024 | 764 |
| 2025 | 778 |
| 2026 | 815 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 393 | 48.2% |
| Women | 422 | 51.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1839 |
| 1961 | 1554 |
| 1971 | 1175 |
| 1981 | 1012 |
| 1991 | 912 |
| 2001 | 873 |
| 2011 | 816 |
| 2019 | 763 |
| 2020 | 746 |
| 2021 | 748 |
| 2022 | 761 |
| 2023 | 765 |
| 2024 | 764 |
| 2025 | 778 |
| 2026 | 815 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 610 | 39.2% |
| Married | 686 | 44.1% |
| Divorced | 84 | 5.4% |
| Widowed | 176 | 11.3% |
School-Age Population (2026)
Total 0-18 years: 119
| Valore | |
|---|---|
| Nido (0-2) | 16 |
| Infanzia (3-5) | 12 |
| Primaria (6-10) | 31 |
| Medie (11-13) | 22 |
| Superiori (14-18) | 38 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Costanzana population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/costanzana-002047" title="Population pyramid of Costanzana — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/costanzana-002047" alt="Population pyramid of Costanzana — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>