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Population & demographics
All demographic data for Sestu: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Sestu.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Sestu.
Sestu is a medium-sized municipality in the province of Cagliari, Sardegna region. With a population of 20.630 inhabitants and a density of 427 per km², it covers an area of 48.4 km². The average declared income is 20.673 €.
Sestu in numbers: the analysis
Sestu has grown substantially since 1951: from 5,640 inhabitants then to 20,630 in 2026, an increase of 265.8%.
The generational balance is in line with the norm: the ageing index of Sestu is 168 (over-65s per 100 under-14s).
For 2050 the projections point to an essentially unchanged population: about 20,114 inhabitants.
Few municipalities in Sardegna are larger: it ranks no. 13 by population out of 377.
Among the 17 municipalities of the province of Cagliari, Sestu ranks 6 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 20.783 |
| 2020 | 20.900 |
| 2021 | 20.772 |
| 2022 | 20.800 |
| 2023 | 20.811 |
| 2024 | 20.792 |
| 2025 | 20.751 |
| 2026 | 20.630 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 10.358 | 50.2% |
| Women | 10.272 | 49.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 144 |
| 2022 | 131 |
| 2023 | 103 |
| 2024 | 100 |
| 2025 | 86 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 5640 |
| 1961 | 6739 |
| 1971 | 8730 |
| 1981 | 10.561 |
| 1991 | 12.182 |
| 2001 | 15.233 |
| 2011 | 19.893 |
| 2019 | 20.783 |
| 2020 | 20.900 |
| 2021 | 20.772 |
| 2022 | 20.800 |
| 2023 | 20.811 |
| 2024 | 20.792 |
| 2025 | 20.751 |
| 2026 | 20.630 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 20.318 | 49.0% |
| Married | 17.396 | 41.9% |
| Divorced | 1894 | 4.6% |
| Widowed | 1862 | 4.5% |
School-Age Population (2026)
Total 0-18 years: 3109
| Valore | |
|---|---|
| Nido (0-2) | 287 |
| Infanzia (3-5) | 376 |
| Primaria (6-10) | 810 |
| Medie (11-13) | 570 |
| Superiori (14-18) | 1066 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Sestu population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/sestu-092074" title="Population pyramid of Sestu — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/sestu-092074" alt="Population pyramid of Sestu — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>