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Population & demographics
All demographic data for Terzorio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Terzorio.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Terzorio.
Terzorio is a small municipality in the province of Imperia, Liguria region. With a population of 214 inhabitants and a density of 111 per km², it covers an area of 1.9 km². The average declared income is 18.290 €.
Terzorio in numbers: the analysis
Among the 66 municipalities of the province of Imperia, Terzorio ranks 60 by population.
The census record tells a story of long decline: in 1951 Terzorio had 240 inhabitants; today (2026) it has 214 — 10.8% fewer.
The ageing index is one of the starkest signals: in Terzorio there are 464 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 151 inhabitants for Terzorio: an expected decline of 29.4% from today.
Compared with the provincial average of Imperia (about 3,180 residents per municipality), Terzorio is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 237 |
| 2020 | 233 |
| 2021 | 237 |
| 2022 | 235 |
| 2023 | 230 |
| 2024 | 220 |
| 2025 | 216 |
| 2026 | 214 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 109 | 50.9% |
| Women | 105 | 49.1% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 240 |
| 1961 | 254 |
| 1971 | 272 |
| 1981 | 258 |
| 1991 | 217 |
| 2001 | 214 |
| 2011 | 232 |
| 2019 | 237 |
| 2020 | 233 |
| 2021 | 237 |
| 2022 | 235 |
| 2023 | 230 |
| 2024 | 220 |
| 2025 | 216 |
| 2026 | 214 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 174 | 40.3% |
| Married | 196 | 45.4% |
| Divorced | 24 | 5.6% |
| Widowed | 38 | 8.8% |
School-Age Population (2026)
Total 0-18 years: 24
| Valore | |
|---|---|
| Nido (0-2) | 0 |
| Infanzia (3-5) | 1 |
| Primaria (6-10) | 6 |
| Medie (11-13) | 4 |
| Superiori (14-18) | 13 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Terzorio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/terzorio-008060" title="Population pyramid of Terzorio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/terzorio-008060" alt="Population pyramid of Terzorio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>