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Population & demographics
All demographic data for Treiso: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Treiso.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Treiso.
Treiso is a small municipality in the province of Cuneo, Piemonte region. With a population of 734 inhabitants and a density of 74 per km², it covers an area of 9.9 km². The average declared income is 28.449 €.
Treiso in numbers: the analysis
Demographic projections to 2050 estimate about 640 inhabitants for Treiso: an expected decline of 12.8% from today.
The ageing index is one of the starkest signals: in Treiso there are 279 residents over 65 for every 100 under 14, well above the national average.
The census record tells a story of long decline: in 1951 Treiso had 921 inhabitants; today (2026) it has 734 — 20.3% fewer.
Among the 247 municipalities of the province of Cuneo, Treiso ranks 129 by population.
Compared with the provincial average of Cuneo (about 2,357 residents per municipality), Treiso is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 764 |
| 2020 | 768 |
| 2021 | 774 |
| 2022 | 761 |
| 2023 | 769 |
| 2024 | 758 |
| 2025 | 741 |
| 2026 | 734 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 379 | 51.6% |
| Women | 355 | 48.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 921 |
| 1961 | 761 |
| 1971 | 707 |
| 1981 | 701 |
| 1991 | 709 |
| 2001 | 763 |
| 2011 | 820 |
| 2019 | 764 |
| 2020 | 768 |
| 2021 | 774 |
| 2022 | 761 |
| 2023 | 769 |
| 2024 | 758 |
| 2025 | 741 |
| 2026 | 734 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 556 | 37.5% |
| Married | 770 | 52.0% |
| Divorced | 58 | 3.9% |
| Widowed | 98 | 6.6% |
School-Age Population (2026)
Total 0-18 years: 102
| Valore | |
|---|---|
| Nido (0-2) | 8 |
| Infanzia (3-5) | 16 |
| Primaria (6-10) | 26 |
| Medie (11-13) | 20 |
| Superiori (14-18) | 32 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Treiso population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/treiso-004230" title="Population pyramid of Treiso — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/treiso-004230" alt="Population pyramid of Treiso — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>