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Population & demographics
All demographic data for Senis: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Senis.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Senis.
Senis is a small municipality in the province of Oristano, Sardegna region. With a population of 369 inhabitants and a density of 23 per km², it covers an area of 16.3 km². The average declared income is 15.284 €.
Senis in numbers: the analysis
The census record tells a story of long decline: in 1951 Senis had 957 inhabitants; today (2026) it has 369 — 61.4% fewer.
The ageing index is one of the starkest signals: in Senis there are 977 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 196 inhabitants for Senis: an expected decline of 46.9% from today.
Compared with the provincial average of Oristano (about 1,687 residents per municipality), Senis is a markedly smaller centre.
Among the 87 municipalities of the province of Oristano, Senis ranks 63 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 444 |
| 2020 | 435 |
| 2021 | 430 |
| 2022 | 424 |
| 2023 | 406 |
| 2024 | 386 |
| 2025 | 376 |
| 2026 | 369 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 170 | 46.1% |
| Women | 199 | 53.9% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 0 |
| 2022 | 1 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 957 |
| 1961 | 1020 |
| 1971 | 1023 |
| 1981 | 819 |
| 1991 | 674 |
| 2001 | 576 |
| 2011 | 479 |
| 2019 | 444 |
| 2020 | 435 |
| 2021 | 430 |
| 2022 | 424 |
| 2023 | 406 |
| 2024 | 386 |
| 2025 | 376 |
| 2026 | 369 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 326 | 43.4% |
| Married | 316 | 42.0% |
| Divorced | 8 | 1.1% |
| Widowed | 102 | 13.6% |
School-Age Population (2026)
Total 0-18 years: 22
| Valore | |
|---|---|
| Nido (0-2) | 0 |
| Infanzia (3-5) | 2 |
| Primaria (6-10) | 6 |
| Medie (11-13) | 8 |
| Superiori (14-18) | 6 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Senis population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/senis-095054" title="Population pyramid of Senis — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/senis-095054" alt="Population pyramid of Senis — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>