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Hamilton County is a county located in the state of Illinois. According to the 2010 census, it has a population of 8,457. Hamilton County was created on February 8, 1821. The county seat is McLeansboro. The county is named for Alexander Hamilton (1755-1804), first United States Secretary of the Treasury.
The county is named for Alexander Hamilton, revolutionary soldier and first Secretary of the Treasury (1789-95).
County QuickFacts: CensusBureau Quick Facts
Hamilton County was created on February 8, 1821 (Laws, 1821, p. 113) and was formed from White County. Present area,
or parts of it, formerly included in: White County (1815-1821), Gallatin County (1812-1815), Randolph County
(1801-1812), St. Clair County (1795-1801) and Knox, Northwest Territory (1790-1795).
The County was named for Alexander Hamilton, a soldier, statesman, author and financier, aid on the staff of Washington during the Revolution, a member of the Continental Congress, first Secretary of Treasury (1789-1795), and Commander-in-Chief of the United States Army in 1799. The County Seat is McLeansboro (1821-Present).
As reported by the Census Bureau, the county has a total area of 436 square miles (1,129 km2), of which, 435 square miles (1,127 km2) of it is land and 1 square miles (2 km2) of it (0.15%) is water.
Hamilton county is located in south Illinois. Hamilton County State
Fish and Wildlife Area is located in this county.
Bordering counties are as follows: