Siliqua: 3468 inhabitants (2026)
ISTAT Code: 111084
39.2999°N, 8.8089°E
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Population & demographics
All demographic data for Siliqua: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Siliqua.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Siliqua.
Siliqua is a small municipality in the province of Sud Sardegna, Sardegna region. With a population of 3468 inhabitants and a density of 18 per km², it covers an area of 190.3 km². The average declared income is 18.629 €.
Siliqua in numbers: the analysis
The ageing index is one of the starkest signals: in Siliqua there are 363 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 2,605 inhabitants for Siliqua: an expected decline of 24.9% from today.
Among the 107 municipalities of the province of Sud Sardegna, Siliqua ranks 29 by population.
The census record tells a story of long decline: in 2019 Siliqua had 3,770 inhabitants; today (2026) it has 3,468 — 8% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 3770 |
| 2020 | 3712 |
| 2021 | 3623 |
| 2022 | 3614 |
| 2023 | 3565 |
| 2024 | 3529 |
| 2025 | 3489 |
| 2026 | 3468 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1732 | 49.9% |
| Women | 1736 | 50.1% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 16 |
| 2022 | 15 |
| 2023 | 13 |
| 2024 | 19 |
| 2025 | 14 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 2019 | 3770 |
| 2020 | 3712 |
| 2021 | 3623 |
| 2022 | 3614 |
| 2023 | 3565 |
| 2024 | 3529 |
| 2025 | 3489 |
| 2026 | 3468 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3124 | 44.8% |
| Married | 3030 | 43.4% |
| Divorced | 242 | 3.5% |
| Widowed | 582 | 8.3% |
School-Age Population (2026)
Total 0-18 years: 403
| Valore | |
|---|---|
| Nido (0-2) | 48 |
| Infanzia (3-5) | 41 |
| Primaria (6-10) | 106 |
| Medie (11-13) | 81 |
| Superiori (14-18) | 127 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Siliqua population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/siliqua-111084" title="Population pyramid of Siliqua — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/siliqua-111084" alt="Population pyramid of Siliqua — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>