Monmouth
United States
PROFILE
- Country: United States
- State: Illinois
- Population: 9,210 (2016)
- Latitude: 40° 54.7' N (40.91143°)
- Longitude: 90° 38.8' W (-90.64736°)
- Elevation: 232 m/761 ft. above sea level
- Time zone: America/Chicago (UTC -06:00); DST observed (UTC -05:00)