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Population & demographics
All demographic data for Santo Stefano Quisquina: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Santo Stefano Quisquina.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Santo Stefano Quisquina.
Santo Stefano Quisquina is a small municipality in the province of Agrigento, Sicilia region. With a population of 3854 inhabitants and a density of 45 per km², it covers an area of 85.1 km². The average declared income is 16.004 €.
Santo Stefano Quisquina in numbers: the analysis
The census record tells a story of long decline: in 1951 Santo Stefano Quisquina had 6,577 inhabitants; today (2026) it has 3,854 — 41.4% fewer.
The ageing index is one of the starkest signals: in Santo Stefano Quisquina there are 409 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 2,474 inhabitants for Santo Stefano Quisquina: an expected decline of 35.8% from today.
Compared with the provincial average of Agrigento (about 9,466 residents per municipality), Santo Stefano Quisquina is a markedly smaller centre.
Among the 43 municipalities of the province of Agrigento, Santo Stefano Quisquina ranks 25 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 4386 |
| 2020 | 4290 |
| 2021 | 4216 |
| 2022 | 4159 |
| 2023 | 4077 |
| 2024 | 3998 |
| 2025 | 3934 |
| 2026 | 3854 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1873 | 48.6% |
| Women | 1981 | 51.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 14 |
| 2022 | 16 |
| 2023 | 21 |
| 2024 | 29 |
| 2025 | 11 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 6577 |
| 1961 | 6485 |
| 1971 | 5902 |
| 1981 | 5823 |
| 1991 | 5628 |
| 2001 | 5405 |
| 2011 | 4897 |
| 2019 | 4386 |
| 2020 | 4290 |
| 2021 | 4216 |
| 2022 | 4159 |
| 2023 | 4077 |
| 2024 | 3998 |
| 2025 | 3934 |
| 2026 | 3854 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3186 | 40.5% |
| Married | 3778 | 48.0% |
| Divorced | 150 | 1.9% |
| Widowed | 754 | 9.6% |
School-Age Population (2026)
Total 0-18 years: 413
| Valore | |
|---|---|
| Nido (0-2) | 55 |
| Infanzia (3-5) | 47 |
| Primaria (6-10) | 96 |
| Medie (11-13) | 63 |
| Superiori (14-18) | 152 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Santo Stefano Quisquina population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/santo-stefano-quisquina-084040" title="Population pyramid of Santo Stefano Quisquina — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/santo-stefano-quisquina-084040" alt="Population pyramid of Santo Stefano Quisquina — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>