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Population & demographics
All demographic data for Santa Marinella: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Santa Marinella.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Santa Marinella.
Santa Marinella is a medium-sized municipality in the province of Roma, Lazio region. With a population of 18.445 inhabitants and a density of 379 per km², it covers an area of 48.7 km². The average declared income is 26.050 €.
Santa Marinella in numbers: the analysis
Looking ahead to 2050, projections give Santa Marinella about 19,534 inhabitants, up 5.9% from today.
The ageing index is one of the starkest signals: in Santa Marinella there are 283 residents over 65 for every 100 under 14, well above the national average.
Santa Marinella has grown substantially since 1951: from 5,171 inhabitants then to 18,445 in 2026, an increase of 256.7%.
Among the 121 municipalities of the province of Roma, Santa Marinella ranks 26 by population.
Compared with the provincial average of Roma (about 34,917 residents per municipality), Santa Marinella is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 18.139 |
| 2020 | 18.174 |
| 2021 | 18.516 |
| 2022 | 18.531 |
| 2023 | 18.428 |
| 2024 | 18.446 |
| 2025 | 18.431 |
| 2026 | 18.445 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 8940 | 48.5% |
| Women | 9505 | 51.5% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 84 |
| 2022 | 95 |
| 2023 | 99 |
| 2024 | 97 |
| 2025 | 92 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 5171 |
| 1961 | 6247 |
| 1971 | 7759 |
| 1981 | 9700 |
| 1991 | 11.819 |
| 2001 | 14.951 |
| 2011 | 17.403 |
| 2019 | 18.139 |
| 2020 | 18.174 |
| 2021 | 18.516 |
| 2022 | 18.531 |
| 2023 | 18.428 |
| 2024 | 18.446 |
| 2025 | 18.431 |
| 2026 | 18.445 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 15.564 | 42.2% |
| Married | 16.456 | 44.6% |
| Divorced | 2280 | 6.2% |
| Widowed | 2562 | 7.0% |
School-Age Population (2026)
Total 0-18 years: 2453
| Valore | |
|---|---|
| Nido (0-2) | 287 |
| Infanzia (3-5) | 308 |
| Primaria (6-10) | 614 |
| Medie (11-13) | 435 |
| Superiori (14-18) | 809 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Santa Marinella population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/santa-marinella-058097" title="Population pyramid of Santa Marinella — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/santa-marinella-058097" alt="Population pyramid of Santa Marinella — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>