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Population & demographics
All demographic data for Stio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Stio.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Stio.
Stio is a small municipality in the province of Salerno, Campania region. With a population of 759 inhabitants and a density of 31 per km², it covers an area of 24.1 km². The average declared income is 15.870 €.
Stio in numbers: the analysis
The ageing index is one of the starkest signals: in Stio there are 336 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 600 inhabitants for Stio: an expected decline of 20.9% from today.
Compared with the provincial average of Salerno (about 6,666 residents per municipality), Stio is a markedly smaller centre.
Among the 158 municipalities of the province of Salerno, Stio ranks 131 by population.
The census record tells a story of long decline: in 1951 Stio had 1,853 inhabitants; today (2026) it has 759 — 59% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 813 |
| 2020 | 793 |
| 2021 | 793 |
| 2022 | 776 |
| 2023 | 775 |
| 2024 | 774 |
| 2025 | 760 |
| 2026 | 759 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 369 | 48.6% |
| Women | 390 | 51.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 4 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1853 |
| 1961 | 1601 |
| 1971 | 1300 |
| 1981 | 1145 |
| 1991 | 1169 |
| 2001 | 1088 |
| 2011 | 942 |
| 2019 | 813 |
| 2020 | 793 |
| 2021 | 793 |
| 2022 | 776 |
| 2023 | 775 |
| 2024 | 774 |
| 2025 | 760 |
| 2026 | 759 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 626 | 41.2% |
| Married | 702 | 46.2% |
| Divorced | 20 | 1.3% |
| Widowed | 172 | 11.3% |
School-Age Population (2026)
Total 0-18 years: 101
| Valore | |
|---|---|
| Nido (0-2) | 13 |
| Infanzia (3-5) | 15 |
| Primaria (6-10) | 28 |
| Medie (11-13) | 14 |
| Superiori (14-18) | 31 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Stio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/stio-065145" title="Population pyramid of Stio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/stio-065145" alt="Population pyramid of Stio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>