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Population & demographics
All demographic data for Ternengo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Ternengo.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Ternengo.
Ternengo is a small municipality in the province of Biella, Piemonte region. With a population of 264 inhabitants and a density of 140 per km², it covers an area of 1.9 km². The average declared income is 23.243 €.
Ternengo in numbers: the analysis
The ageing index is one of the starkest signals: in Ternengo there are 463 residents over 65 for every 100 under 14, well above the national average.
The census record tells a story of long decline: in 1951 Ternengo had 381 inhabitants; today (2026) it has 264 — 30.7% fewer.
Among the 74 municipalities of the province of Biella, Ternengo ranks 66 by population.
Compared with the provincial average of Biella (about 2,273 residents per municipality), Ternengo is a markedly smaller centre.
Demographic projections to 2050 estimate about 211 inhabitants for Ternengo: an expected decline of 20.1% from today.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 282 |
| 2020 | 270 |
| 2021 | 270 |
| 2022 | 260 |
| 2023 | 256 |
| 2024 | 256 |
| 2025 | 265 |
| 2026 | 264 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 130 | 49.2% |
| Women | 134 | 50.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 0 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 381 |
| 1961 | 394 |
| 1971 | 262 |
| 1981 | 252 |
| 1991 | 320 |
| 2001 | 307 |
| 2011 | 298 |
| 2019 | 282 |
| 2020 | 270 |
| 2021 | 270 |
| 2022 | 260 |
| 2023 | 256 |
| 2024 | 256 |
| 2025 | 265 |
| 2026 | 264 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 190 | 35.8% |
| Married | 272 | 51.3% |
| Divorced | 24 | 4.5% |
| Widowed | 44 | 8.3% |
School-Age Population (2026)
Total 0-18 years: 32
| Valore | |
|---|---|
| Nido (0-2) | 3 |
| Infanzia (3-5) | 6 |
| Primaria (6-10) | 5 |
| Medie (11-13) | 4 |
| Superiori (14-18) | 14 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Ternengo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/ternengo-096067" title="Population pyramid of Ternengo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/ternengo-096067" alt="Population pyramid of Ternengo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>