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Population & demographics
All demographic data for Subiaco: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Subiaco.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Subiaco.
Subiaco is a medium-sized municipality in the province of Roma, Lazio region. With a population of 8527 inhabitants and a density of 136 per km², it covers an area of 62.8 km². The average declared income is 22.235 €.
Subiaco in numbers: the analysis
The census record tells a story of long decline: in 1951 Subiaco had 9,178 inhabitants; today (2026) it has 8,527 — 7.1% fewer.
The ageing index is one of the starkest signals: in Subiaco there are 289 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 7,796 inhabitants for Subiaco: an expected decline of 8.6% from today.
Compared with the provincial average of Roma (about 34,917 residents per municipality), Subiaco is a markedly smaller centre.
Among the 121 municipalities of the province of Roma, Subiaco ranks 50 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 8753 |
| 2020 | 8699 |
| 2021 | 8515 |
| 2022 | 8538 |
| 2023 | 8488 |
| 2024 | 8524 |
| 2025 | 8499 |
| 2026 | 8527 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 4234 | 49.7% |
| Women | 4293 | 50.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 39 |
| 2022 | 37 |
| 2023 | 49 |
| 2024 | 36 |
| 2025 | 29 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 9178 |
| 1961 | 8595 |
| 1971 | 8431 |
| 1981 | 8897 |
| 1991 | 9004 |
| 2001 | 9030 |
| 2011 | 9066 |
| 2019 | 8753 |
| 2020 | 8699 |
| 2021 | 8515 |
| 2022 | 8538 |
| 2023 | 8488 |
| 2024 | 8524 |
| 2025 | 8499 |
| 2026 | 8527 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 7392 | 43.5% |
| Married | 7762 | 45.7% |
| Divorced | 484 | 2.8% |
| Widowed | 1360 | 8.0% |
School-Age Population (2026)
Total 0-18 years: 1130
| Valore | |
|---|---|
| Nido (0-2) | 122 |
| Infanzia (3-5) | 136 |
| Primaria (6-10) | 328 |
| Medie (11-13) | 190 |
| Superiori (14-18) | 354 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Subiaco population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/subiaco-058103" title="Population pyramid of Subiaco — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/subiaco-058103" alt="Population pyramid of Subiaco — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>