 | Airports: United States: Monmouth Municipal Airport | |
| Airport name: | Monmouth Municipal Airport |
| Airport code (ICAO): | C66 |
| Latitude: | 40.9297 |
| Longitude: | -90.6311 |
| Height above sea: | 753 ft / 229 m |
| Country: | United States - North America |
| Region: | Illinois |
| City: | Monmouth |
| Airlines scheduled services: | no |