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Population & demographics
All demographic data for Siapiccia: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Siapiccia.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Siapiccia.
Siapiccia is a small municipality in the province of Oristano, Sardegna region. With a population of 334 inhabitants and a density of 19 per km², it covers an area of 17.7 km². The average declared income is 16.545 €.
Siapiccia in numbers: the analysis
The ageing index is one of the starkest signals: in Siapiccia there are 331 residents over 65 for every 100 under 14, well above the national average.
The census record tells a story of long decline: in 1951 Siapiccia had 524 inhabitants; today (2026) it has 334 — 36.3% fewer.
Among the 87 municipalities of the province of Oristano, Siapiccia ranks 64 by population.
Compared with the provincial average of Oristano (about 1,687 residents per municipality), Siapiccia is a markedly smaller centre.
Demographic projections to 2050 estimate about 284 inhabitants for Siapiccia: an expected decline of 15% from today.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 350 |
| 2020 | 347 |
| 2021 | 348 |
| 2022 | 344 |
| 2023 | 347 |
| 2024 | 350 |
| 2025 | 337 |
| 2026 | 334 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 166 | 49.7% |
| Women | 168 | 50.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 0 |
| 2024 | 3 |
| 2025 | 2 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 524 |
| 1961 | 552 |
| 1971 | 448 |
| 1981 | 390 |
| 1991 | 412 |
| 2001 | 376 |
| 2011 | 370 |
| 2019 | 350 |
| 2020 | 347 |
| 2021 | 348 |
| 2022 | 344 |
| 2023 | 347 |
| 2024 | 350 |
| 2025 | 337 |
| 2026 | 334 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 336 | 49.9% |
| Married | 262 | 38.9% |
| Divorced | 8 | 1.2% |
| Widowed | 68 | 10.1% |
School-Age Population (2026)
Total 0-18 years: 45
| Valore | |
|---|---|
| Nido (0-2) | 5 |
| Infanzia (3-5) | 7 |
| Primaria (6-10) | 11 |
| Medie (11-13) | 7 |
| Superiori (14-18) | 15 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Siapiccia population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/siapiccia-095076" title="Population pyramid of Siapiccia — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/siapiccia-095076" alt="Population pyramid of Siapiccia — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>