Castiglione Olona
Castiglione Olona is a comune in the Province of Varese in the Lombardy region in Italy.
| Comune di Castiglione Olona | |
 | |
 Coat of arms | |
| Country | Italy |
| Region | Lombardy |
| Province | Varese (VA) |
| Frazioni | Gornate Superiore, Caronno Corbellaro |
| Government | |
| • Mayor | Emanuele Poretti |
| Area | |
| • Total | 7 km2 (3 sq mi) |
| Elevation | 307 m (1,007 ft) |
| Population (2015) | |
| • Total | 7,753 |
| • Density | 1,110/km2 (2,870/sq mi) |
| Time zone | UTC+1 (CET) |
| • Summer (DST) | UTC+2 (CEST) |
| Postal code | 21043 |
| Website | Official website |
