Map of Acilia-Castel Fusano-Ostia Antica, Italy

Acilia-Castel Fusano-Ostia Antica is a city in Lazio, Italy, with a population of about 129,362. It lies at 41.7634°N, 12.3308°E. Acilia-Castel Fusano-Ostia Antica is about 21 km (13 mi) southwest of Rome, the capital. The nearest city on our map is Lido di Ostia, 6 km to the southwest.

Acilia-Castel Fusano-Ostia Antica at a glance

Where is Acilia-Castel Fusano-Ostia Antica?

• The 28th largest city in Italy by recorded population.
• The 2nd largest city in Lazio on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 08 min on the shortest day to 15 h 13 min on the longest day (around 21 December and 21 June).

Cities near Acilia-Castel Fusano-Ostia Antica

• Lido di Ostia — 6 km southwest
• Fiumicino — 8 km west
• Vatican City — 19 km northeast, Vatican City
• Rome — 21 km northeast
• Ciampino — 23 km east
• Marino — 27 km east
• Ladispoli — 30 km northwest
• Aprilia — 33 km southeast
• Velletri — 38 km east
• Monterotondo — 40 km northeast

Largest cities in Lazio

• Rome — 2,318,895
• Guidonia Montecelio — 89,165
• Lido di Ostia — 85,301
• Fiumicino — 80,738
• Latina — 76,305
• Aprilia — 74,977
• Velletri — 52,911
• Nettuno — 49,873
• Civitavecchia — 47,543
• Viterbo — 47,134

Largest cities in Italy

• Rome — 2,318,895
• Milan — 1,371,498
• Naples — 909,048
• Turin — 847,287
• Palermo — 648,260
• Genoa — 580,097
• Bologna — 394,843
• Florence — 367,150
• Bari — 316,491
• Catania — 311,584

Map of Italy and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.