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Population & demographics
All demographic data for Olbia: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Olbia.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Olbia.
Olbia is a large municipality in the province of Sassari, Sardegna region. With a population of 61.739 inhabitants and a density of 160 per km², it covers an area of 385.1 km². The average declared income is 22.036 €.
Olbia in numbers: the analysis
Olbia is among Italy's major centres: the country's no. 95 municipality by population out of 7896.
Few municipalities in Sardegna are larger: it ranks no. 4 by population out of 377.
By population, Olbia ranks no. 2 among the 92 municipalities of the province of Sassari.
Over the long run the population of Olbia has stayed essentially stable: 59,599 inhabitants in 2019, 61,739 in 2026 (less than 5% change).
The generational balance is in line with the norm: the ageing index of Olbia is 179 (over-65s per 100 under-14s).
Looking ahead to 2050, projections give Olbia about 69,677 inhabitants, up 12.9% from today.
The average municipality in the province of Sassari has about 5,115 residents: Olbia has 12.1 times as many.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 59.599 |
| 2020 | 60.154 |
| 2021 | 59.948 |
| 2022 | 60.711 |
| 2023 | 61.172 |
| 2024 | 61.481 |
| 2025 | 61.681 |
| 2026 | 61.739 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 30.530 | 49.5% |
| Women | 31.209 | 50.5% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 423 |
| 2022 | 385 |
| 2023 | 328 |
| 2024 | 328 |
| 2025 | 309 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 2019 | 59.599 |
| 2020 | 60.154 |
| 2021 | 59.948 |
| 2022 | 60.711 |
| 2023 | 61.172 |
| 2024 | 61.481 |
| 2025 | 61.681 |
| 2026 | 61.739 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 60.332 | 49.0% |
| Married | 50.294 | 40.8% |
| Divorced | 5832 | 4.7% |
| Widowed | 6782 | 5.5% |
School-Age Population (2026)
Total 0-18 years: 9778
| Valore | |
|---|---|
| Nido (0-2) | 971 |
| Infanzia (3-5) | 1228 |
| Primaria (6-10) | 2547 |
| Medie (11-13) | 1734 |
| Superiori (14-18) | 3298 |
Foreign residents
Foreign presence and top citizenships