Monticello, Illinois

Monticello, Illinois
Motto(s): 
"Yesterday's Charm, Tomorrow's Innovation"
Interactive map of Monticello, Illinois
Monticello
Monticello
Coordinates: 40°02′03″N 88°34′22″W / 40.03417°N 88.57278°W / 40.03417; -88.57278
CountryUnited States
StateIllinois
CountyPiatt
TownshipsMonticello, Sangamon
Area
 • Total
3.89 sq mi (10.08 km2)
 • Land3.85 sq mi (9.98 km2)
 • Water0.039 sq mi (0.10 km2)
Elevation
656 ft (200 m)
Population
 (2020)
 • Total
5,941
 • Density1,542/sq mi (595.5/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP code
61856
Area code(s)217, 447
FIPS code17-50244
GNIS ID2395384
Websitewww.monticelloillinois.net

Monticello (/ˌmɒntɪˈsɛl/ MON-tiss-EL-oh) is a city in and the county seat of Piatt County, Illinois, United States. The population was 5,941 at the 2020 census.