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Population & demographics
All demographic data for Allai: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Allai.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Allai.
Allai is a small municipality in the province of Oristano, Sardegna region. With a population of 333 inhabitants and a density of 12 per km², it covers an area of 27.2 km². The average declared income is 17.771 €.
Allai in numbers: the analysis
Among the 87 municipalities of the province of Oristano, Allai ranks 65 by population.
The census record tells a story of long decline: in 1951 Allai had 752 inhabitants; today (2026) it has 333 — 55.7% fewer.
The ageing index is one of the starkest signals: in Allai there are 538 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 257 inhabitants for Allai: an expected decline of 22.8% from today.
Compared with the provincial average of Oristano (about 1,687 residents per municipality), Allai is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 359 |
| 2020 | 350 |
| 2021 | 353 |
| 2022 | 358 |
| 2023 | 357 |
| 2024 | 349 |
| 2025 | 338 |
| 2026 | 333 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 170 | 51.1% |
| Women | 163 | 48.9% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 0 |
| 2024 | 2 |
| 2025 | 1 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 752 |
| 1961 | 783 |
| 1971 | 601 |
| 1981 | 513 |
| 1991 | 466 |
| 2001 | 413 |
| 2011 | 370 |
| 2019 | 359 |
| 2020 | 350 |
| 2021 | 353 |
| 2022 | 358 |
| 2023 | 357 |
| 2024 | 349 |
| 2025 | 338 |
| 2026 | 333 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 330 | 48.8% |
| Married | 264 | 39.1% |
| Divorced | 16 | 2.4% |
| Widowed | 66 | 9.8% |
School-Age Population (2026)
Total 0-18 years: 37
| Valore | |
|---|---|
| Nido (0-2) | 3 |
| Infanzia (3-5) | 5 |
| Primaria (6-10) | 5 |
| Medie (11-13) | 5 |
| Superiori (14-18) | 19 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Allai population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/allai-095005" title="Population pyramid of Allai — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/allai-095005" alt="Population pyramid of Allai — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>