The territory necessary to form Lee County was detached from Ogle County in 1839. Father John Dixon was instrumental in the formation of both Lee County and the selection of Dixon as the county seat. Father Dixon donated eighty acres of land, to be sold at auction to raise funds necessary to construct a building. He also deeded, to the county, the block square parcel of land on which the present old Lee County Court House now stands. Dixon’s claim to fame is that President Ronald Reagan lived there and attended Dixon High School. According to the 2017 Census of Agriculture, there were 832 farms in Lee County, spanning 392,102 acres, with an average farm size of 471 acres. The population of Lee County was 36,031 (based on 2010 census). Lee County’s temperatures range from 10°F during January to 82°F during July. Average monthly precipitation ranges from 1.43" during February to 4.88" during June. If you're looking for land for sale in Lee County, IL, check out Land Pro LLC's current listings below. If the current land for sale in Lee County doesn't match your needs, take a look at land for sale in neighboring Ogle County, DeKalb County, LaSalle County, Bureau County, and Whiteside County. You can also view all the Illinois land offered for sale by Land Pro LLC.