Explore related data
Jump from local statistics to linked rankings and territorial pages.
Region page
Open the full profile page for Sardegna.
Province page
Open the full profile page for the province of Cagliari.
Income overview
Explore the income map and the municipalities with the highest and lowest values.
Regional income ranking
View the municipalities in Sardegna ranked by average income.
Provincial population ranking
View the municipalities in the province of Cagliari ranked by population.
Compare this municipality
Open the comparison page with this municipality preselected.
Population & demographics
All demographic data for Sinnai: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Sinnai.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Sinnai.
Sinnai is a medium-sized municipality in the province of Cagliari, Sardegna region. With a population of 17.447 inhabitants and a density of 78 per km², it covers an area of 224.1 km². The average declared income is 20.457 €.
Sinnai in numbers: the analysis
The generational balance is in line with the norm: the ageing index of Sinnai is 212 (over-65s per 100 under-14s).
Looking ahead to 2050, projections give Sinnai about 18,676 inhabitants, up 7% from today.
Few municipalities in Sardegna are larger: it ranks no. 16 by population out of 377.
Among the 17 municipalities of the province of Cagliari, Sinnai ranks 8 by population.
Sinnai has grown substantially since 1951: from 6,736 inhabitants then to 17,447 in 2026, an increase of 159%.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 17.104 |
| 2020 | 17.093 |
| 2021 | 17.301 |
| 2022 | 17.323 |
| 2023 | 17.227 |
| 2024 | 17.279 |
| 2025 | 17.360 |
| 2026 | 17.447 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 8750 | 50.2% |
| Women | 8697 | 49.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 109 |
| 2022 | 84 |
| 2023 | 82 |
| 2024 | 64 |
| 2025 | 69 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 6736 |
| 1961 | 7725 |
| 1971 | 8799 |
| 1981 | 11.229 |
| 1991 | 13.086 |
| 2001 | 15.235 |
| 2011 | 16.730 |
| 2019 | 17.104 |
| 2020 | 17.093 |
| 2021 | 17.301 |
| 2022 | 17.323 |
| 2023 | 17.227 |
| 2024 | 17.279 |
| 2025 | 17.360 |
| 2026 | 17.447 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 16.194 | 46.6% |
| Married | 15.350 | 44.2% |
| Divorced | 1150 | 3.3% |
| Widowed | 2026 | 5.8% |
School-Age Population (2026)
Total 0-18 years: 2539
| Valore | |
|---|---|
| Nido (0-2) | 225 |
| Infanzia (3-5) | 300 |
| Primaria (6-10) | 710 |
| Medie (11-13) | 459 |
| Superiori (14-18) | 845 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Sinnai population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/sinnai-092080" title="Population pyramid of Sinnai — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/sinnai-092080" alt="Population pyramid of Sinnai — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>