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Population & demographics
All demographic data for Siligo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Siligo.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Siligo.
Siligo is a small municipality in the province of Sassari, Sardegna region. With a population of 734 inhabitants and a density of 17 per km², it covers an area of 43.3 km². The average declared income is 22.175 €.
Siligo in numbers: the analysis
Compared with the provincial average of Sassari (about 5,115 residents per municipality), Siligo is a markedly smaller centre.
Among the 92 municipalities of the province of Sassari, Siligo ranks 68 by population.
The census record tells a story of long decline: in 1951 Siligo had 1,856 inhabitants; today (2026) it has 734 — 60.5% fewer.
The ageing index is one of the starkest signals: in Siligo there are 389 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 457 inhabitants for Siligo: an expected decline of 37.7% from today.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 843 |
| 2020 | 831 |
| 2021 | 818 |
| 2022 | 812 |
| 2023 | 791 |
| 2024 | 765 |
| 2025 | 727 |
| 2026 | 734 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 378 | 51.5% |
| Women | 356 | 48.5% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 0 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1856 |
| 1961 | 1606 |
| 1971 | 1372 |
| 1981 | 1298 |
| 1991 | 1142 |
| 2001 | 1012 |
| 2011 | 912 |
| 2019 | 843 |
| 2020 | 831 |
| 2021 | 818 |
| 2022 | 812 |
| 2023 | 791 |
| 2024 | 765 |
| 2025 | 727 |
| 2026 | 734 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 638 | 43.9% |
| Married | 622 | 42.8% |
| Divorced | 42 | 2.9% |
| Widowed | 152 | 10.5% |
School-Age Population (2026)
Total 0-18 years: 86
| Valore | |
|---|---|
| Nido (0-2) | 6 |
| Infanzia (3-5) | 14 |
| Primaria (6-10) | 29 |
| Medie (11-13) | 17 |
| Superiori (14-18) | 20 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Siligo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/siligo-090068" title="Population pyramid of Siligo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/siligo-090068" alt="Population pyramid of Siligo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>