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Population & demographics
All demographic data for Guidonia Montecelio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Guidonia Montecelio.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Guidonia Montecelio.
Guidonia Montecelio is a large municipality in the province of Roma, Lazio region. With a population of 89.420 inhabitants and a density of 1113 per km², it covers an area of 80.3 km². The average declared income is 23.038 €.
Guidonia Montecelio in numbers: the analysis
By population, Guidonia Montecelio ranks no. 2 among the 121 municipalities of the province of Roma.
Guidonia Montecelio has grown substantially since 1951: from 12,811 inhabitants then to 89,420 in 2026, an increase of 598%.
The generational balance is in line with the norm: the ageing index of Guidonia Montecelio is 154 (over-65s per 100 under-14s).
Looking ahead to 2050, projections give Guidonia Montecelio about 97,958 inhabitants, up 9.5% from today.
The average municipality in the province of Roma has about 34,917 residents: Guidonia Montecelio has 2.6 times as many.
Guidonia Montecelio is among Italy's major centres: the country's no. 56 municipality by population out of 7896.
At the regional level it sits near the very top: no. 3 most populous of the 378 municipalities in Lazio.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 87.073 |
| 2020 | 87.039 |
| 2021 | 87.875 |
| 2022 | 88.642 |
| 2023 | 89.263 |
| 2024 | 88.992 |
| 2025 | 89.011 |
| 2026 | 89.420 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 44.358 | 49.6% |
| Women | 45.062 | 50.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 614 |
| 2022 | 596 |
| 2023 | 620 |
| 2024 | 553 |
| 2025 | 578 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 12.811 |
| 1961 | 22.205 |
| 1971 | 32.399 |
| 1981 | 49.328 |
| 1991 | 55.544 |
| 2001 | 67.516 |
| 2011 | 81.447 |
| 2019 | 87.073 |
| 2020 | 87.039 |
| 2021 | 87.875 |
| 2022 | 88.642 |
| 2023 | 89.263 |
| 2024 | 88.992 |
| 2025 | 89.011 |
| 2026 | 89.420 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 81.588 | 45.9% |
| Married | 79.732 | 44.8% |
| Divorced | 6300 | 3.5% |
| Widowed | 10.292 | 5.8% |
School-Age Population (2026)
Total 0-18 years: 15.697
| Valore | |
|---|---|
| Nido (0-2) | 1782 |
| Infanzia (3-5) | 2018 |
| Primaria (6-10) | 4049 |
| Medie (11-13) | 2862 |
| Superiori (14-18) | 4986 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Guidonia Montecelio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/guidonia-montecelio-058047" title="Population pyramid of Guidonia Montecelio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/guidonia-montecelio-058047" alt="Population pyramid of Guidonia Montecelio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>