Monticello, IL
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Monticello Map
Monticello is a city in Piatt County, Illinois, United States. The population was 5,138 at the 2000 census, and 5,374 at a 2009 estimate. It is the county seat of Piatt County.
Monticello is located at 40°1?41?N 88°34?23?W / 40.02806°N 88.57306°W / 40.02806; -88.57306 (40.028092, -88.573003).
According to the United States Census Bureau, the city has a total area of 3.0 square miles (7.7 km²), all of it land.
Nearby cities include Weldon, Bondville, Cerro Gordo, Sadorus, Argenta.