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Population & demographics
All demographic data for Semestene: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Semestene.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Semestene.
Semestene is a small municipality in the province of Sassari, Sardegna region. With a population of 127 inhabitants and a density of 3 per km², it covers an area of 39.4 km². The average declared income is 12.839 €.
Semestene in numbers: the analysis
The census record tells a story of long decline: in 1951 Semestene had 744 inhabitants; today (2026) it has 127 — 82.9% fewer.
The ageing index is one of the starkest signals: in Semestene there are 1,020 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 85 inhabitants for Semestene: an expected decline of 33.1% from today.
Compared with the provincial average of Sassari (about 5,115 residents per municipality), Semestene is a markedly smaller centre.
Among the 92 municipalities of the province of Sassari, Semestene ranks 91 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 143 |
| 2020 | 142 |
| 2021 | 129 |
| 2022 | 141 |
| 2023 | 130 |
| 2024 | 125 |
| 2025 | 121 |
| 2026 | 127 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 58 | 45.7% |
| Women | 69 | 54.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 0 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 0 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 744 |
| 1961 | 671 |
| 1971 | 435 |
| 1981 | 348 |
| 1991 | 296 |
| 2001 | 227 |
| 2011 | 171 |
| 2019 | 143 |
| 2020 | 142 |
| 2021 | 129 |
| 2022 | 141 |
| 2023 | 130 |
| 2024 | 125 |
| 2025 | 121 |
| 2026 | 127 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 102 | 42.1% |
| Married | 104 | 43.0% |
| Divorced | 0 | 0.0% |
| Widowed | 36 | 14.9% |
School-Age Population (2026)
Total 0-18 years: 6
| Valore | |
|---|---|
| Nido (0-2) | 2 |
| Infanzia (3-5) | 2 |
| Primaria (6-10) | 1 |
| Medie (11-13) | 0 |
| Superiori (14-18) | 1 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Semestene population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/semestene-090066" title="Population pyramid of Semestene — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/semestene-090066" alt="Population pyramid of Semestene — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>