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Population & demographics
All demographic data for Osilo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Osilo.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Osilo.
Osilo is a small municipality in the province of Sassari, Sardegna region. With a population of 2732 inhabitants and a density of 28 per km², it covers an area of 97.5 km². The average declared income is 17.890 €.
Osilo in numbers: the analysis
Among the 92 municipalities of the province of Sassari, Osilo ranks 30 by population.
The census record tells a story of long decline: in 1951 Osilo had 5,811 inhabitants; today (2026) it has 2,732 — 53% fewer.
The ageing index is one of the starkest signals: in Osilo there are 391 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 2,097 inhabitants for Osilo: an expected decline of 23.2% from today.
Compared with the provincial average of Sassari (about 5,115 residents per municipality), Osilo is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 2951 |
| 2020 | 2925 |
| 2021 | 2879 |
| 2022 | 2834 |
| 2023 | 2800 |
| 2024 | 2791 |
| 2025 | 2774 |
| 2026 | 2732 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1340 | 49.0% |
| Women | 1392 | 51.0% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 12 |
| 2022 | 9 |
| 2023 | 12 |
| 2024 | 18 |
| 2025 | 14 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 5811 |
| 1961 | 5266 |
| 1971 | 4402 |
| 1981 | 3973 |
| 1991 | 3847 |
| 2001 | 3498 |
| 2011 | 3204 |
| 2019 | 2951 |
| 2020 | 2925 |
| 2021 | 2879 |
| 2022 | 2834 |
| 2023 | 2800 |
| 2024 | 2791 |
| 2025 | 2774 |
| 2026 | 2732 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2580 | 46.5% |
| Married | 2272 | 41.0% |
| Divorced | 200 | 3.6% |
| Widowed | 496 | 8.9% |
School-Age Population (2026)
Total 0-18 years: 291
| Valore | |
|---|---|
| Nido (0-2) | 46 |
| Infanzia (3-5) | 30 |
| Primaria (6-10) | 69 |
| Medie (11-13) | 44 |
| Superiori (14-18) | 102 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Osilo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/osilo-090050" title="Population pyramid of Osilo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/osilo-090050" alt="Population pyramid of Osilo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>