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Population & demographics
All demographic data for San Sebastiano al Vesuvio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for San Sebastiano al Vesuvio.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for San Sebastiano al Vesuvio.
San Sebastiano al Vesuvio is a medium-sized municipality in the province of Napoli, Campania region. With a population of 8571 inhabitants and a density of 3007 per km², it covers an area of 2.9 km². The average declared income is 26.811 €.
San Sebastiano al Vesuvio in numbers: the analysis
San Sebastiano al Vesuvio has grown substantially since 1951: from 2,318 inhabitants then to 8,571 in 2026, an increase of 269.8%.
The generational balance is in line with the norm: the ageing index of San Sebastiano al Vesuvio is 185 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 7,452 inhabitants for San Sebastiano al Vesuvio: an expected decline of 13.1% from today.
Compared with the provincial average of Napoli (about 32,118 residents per municipality), San Sebastiano al Vesuvio is a markedly smaller centre.
Among the 92 municipalities of the province of Napoli, San Sebastiano al Vesuvio ranks 65 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 8928 |
| 2020 | 8858 |
| 2021 | 8738 |
| 2022 | 8721 |
| 2023 | 8691 |
| 2024 | 8633 |
| 2025 | 8619 |
| 2026 | 8571 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 4077 | 47.6% |
| Women | 4494 | 52.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 50 |
| 2022 | 56 |
| 2023 | 58 |
| 2024 | 52 |
| 2025 | 54 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 2318 |
| 1961 | 3464 |
| 1971 | 5352 |
| 1981 | 8794 |
| 1991 | 9486 |
| 2001 | 9849 |
| 2011 | 9167 |
| 2019 | 8928 |
| 2020 | 8858 |
| 2021 | 8738 |
| 2022 | 8721 |
| 2023 | 8691 |
| 2024 | 8633 |
| 2025 | 8619 |
| 2026 | 8571 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 7378 | 42.8% |
| Married | 8266 | 48.0% |
| Divorced | 404 | 2.3% |
| Widowed | 1190 | 6.9% |
School-Age Population (2026)
Total 0-18 years: 1513
| Valore | |
|---|---|
| Nido (0-2) | 179 |
| Infanzia (3-5) | 170 |
| Primaria (6-10) | 346 |
| Medie (11-13) | 280 |
| Superiori (14-18) | 538 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the San Sebastiano al Vesuvio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/san-sebastiano-al-vesuvio-063070" title="Population pyramid of San Sebastiano al Vesuvio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/san-sebastiano-al-vesuvio-063070" alt="Population pyramid of San Sebastiano al Vesuvio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>