Guidonia Montecelio Population 2026
Guidonia Montecelio has a population of 89,165, making it the #52 biggest city in 🇮🇹 Italy, located in Lazio. Roughly 0.2% of Italy's population lives here. It is about 26× smaller than Rome, the country's biggest city.
Population (city proper)
89,165
Rank in Italy
#52
Coordinates
41.99°N, 12.72°E
~92 m elevation · Europe/Rome
Distance to capital (Rome)
21 km
13 miles, straight line
Other big cities in Lazio
| City | Population | Rank in Italy |
|---|---|---|
| Rome | 2,318,895 | #1 |
| Acilia-Castel Fusano-Ostia Antica | 129,362 | #28 |
| Lido di Ostia | 85,301 | #56 |
| Latina | 76,305 | #70 |
| Aprilia | 74,977 | #73 |
| Velletri | 52,911 | #123 |
| Nettuno | 49,873 | #135 |
| Civitavecchia | 47,543 | #142 |
Cities near Guidonia Montecelio
- Rome2,318,895 people · ~21 km away
- Velletri52,911 people · ~35 km away
- Acilia-Castel Fusano-Ostia Antica129,362 people · ~41 km away
- Aprilia74,977 people · ~45 km away
- Lido di Ostia85,301 people · ~47 km away
- Rieti39,068 people · ~47 km away
FAQ
What is the population of Guidonia Montecelio?
Guidonia Montecelio has a population of 89,165 (city proper, latest official figure via GeoNames), making it the #52 biggest city in Italy.
What region is Guidonia Montecelio in?
Guidonia Montecelio is located in Lazio, Italy.
Is Guidonia Montecelio the capital of Italy?
No, the capital of Italy is Rome, about 21 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.