Illinois Counties
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Illinois Counties

There are one hundred and two counties in Illinois. St. Clair County was the first county established in what is today Illinois. Most counties in Illinois were named after early American leaders, especially of the American Revolutionary War, as well as soldiers from the Battle of Tippecanoe and the War of 1812.

Lee County, Illinois

Lee County Education, Geography, and HistoryLee County, Illinois Courthouse

Lee County is a county located in the state of Illinois. According to the 2010 census, it has a population of 36,031. Lee County was created on February 27, 1839. The county seat is Dixon. The county is named for "Light Horse" Henry Lee III (1756-1818), American Revolutionary War officer and ninth Governor of Virginia.

The Dixon, IL Micropolitan Statistical Area includes all of Lee County.

Etymology - Origin of Lee County Name

The county is named for Richard Henry Lee, orator and statesman of the American Revolution


County QuickFacts: CensusBureau Quick Facts

Lee County History

Lee County was created on February 27, 1839 (Laws, 1839, p. 170) and was formed from Ogle County . Present area, or parts of it, formerly included in: Ogle County (1836-1839), [Eastern Part: LaSalle County (1831-1836), Putnam County (1825-1831)], [Western Part: JoDaviess County (1827-1836), Fulton County (1823-1825), Pike County (1821-1823)], [Eastern Part: Clark County (1819-1821), Crawford County (1816-1819), Edwards County (1815-1816)], [Western Part: Bond County (1817-1821), Madison County (1815-1817)], Madison County (1812-1817) and St. Clair County (1801-1812).

The County was named for Richard Henry Lee, an orator and statesman of the Revolutionary period, a member of the Continental Congress, a Representative in Congress and United States Senator from Virginia. The County Seat is Dixon (1839-Present).

Geography: Land and Water

As reported by the Census Bureau, the county has a total area of 729 square miles (1,889 km2), of which, 725 square miles (1,879 km2) of it is land and 4 square miles (10 km2) of it (0.54%) is water.

 Lee county is located in north Illinois. Green River State Wildlife Area, Bartlett Woods Nature Preserve and Franklin Creek State Park are located in this county.

Neighboring Counties

Bordering counties are as follows:

  • North: Ogle County
  • Northeast: DeKalb County
  • Southeast: La Salle County
  • Southwest: Bureau County
  • West: Whiteside County


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