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Population & demographics
All demographic data for Alia: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Alia.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Alia.
Alia is a small municipality in the province of Palermo, Sicilia region. With a population of 3138 inhabitants and a density of 69 per km², it covers an area of 45.6 km². The average declared income is 14.622 €.
Alia in numbers: the analysis
The census record tells a story of long decline: in 1951 Alia had 8,331 inhabitants; today (2026) it has 3,138 — 62.3% fewer.
The ageing index is one of the starkest signals: in Alia there are 270 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 2,165 inhabitants for Alia: an expected decline of 31% from today.
Compared with the provincial average of Palermo (about 14,577 residents per municipality), Alia is a markedly smaller centre.
Among the 82 municipalities of the province of Palermo, Alia ranks 44 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 3497 |
| 2020 | 3469 |
| 2021 | 3379 |
| 2022 | 3367 |
| 2023 | 3313 |
| 2024 | 3241 |
| 2025 | 3182 |
| 2026 | 3138 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1526 | 48.6% |
| Women | 1612 | 51.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 28 |
| 2022 | 23 |
| 2023 | 23 |
| 2024 | 16 |
| 2025 | 15 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 8331 |
| 1961 | 7167 |
| 1971 | 5251 |
| 1981 | 5217 |
| 1991 | 4402 |
| 2001 | 4184 |
| 2011 | 3806 |
| 2019 | 3497 |
| 2020 | 3469 |
| 2021 | 3379 |
| 2022 | 3367 |
| 2023 | 3313 |
| 2024 | 3241 |
| 2025 | 3182 |
| 2026 | 3138 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2612 | 41.0% |
| Married | 3094 | 48.6% |
| Divorced | 60 | 0.9% |
| Widowed | 598 | 9.4% |
School-Age Population (2026)
Total 0-18 years: 457
| Valore | |
|---|---|
| Nido (0-2) | 54 |
| Infanzia (3-5) | 60 |
| Primaria (6-10) | 130 |
| Medie (11-13) | 69 |
| Superiori (14-18) | 144 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Alia population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/alia-082001" title="Population pyramid of Alia — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/alia-082001" alt="Population pyramid of Alia — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>