Will County is a county located in the northern part of the state of Illinois. According to the 2010 census, it had a
population of
677,560. Will County was created on January 12, 1836. The
county seat is Joliet. The county is
named for Conrad Will (1779-1835), physician, local
businessman and longtime member of the state legislature.
Will County is one of the five collar counties of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area.
The county is named for Conrad Will, member of the Constitutional Convention of 1818 and member of the first nine Illinois General Assemblies.
County QuickFacts: CensusBureau Quick Facts
Will County was created on January 12, 1836 (Laws, 1836, p. 262) and was formed from Cook and Iroquois Counties.
Present area, or parts of it, formerly included in: Cook County (1831-1836), Iroquois County (1833-1836), Vermilion
County (1826-1836), Putnam County (1825-1827), Edgar County (1823-1825), Fulton County (1823-1825), Clark County
(1819-1823), Pike County (1821-1823), Crawford County (1816-1823), Edwards County (1815-1816), Madison County
(1812-1815), St. Clair County (1801-1812) and Knox, Northwest Territory (1790-1801).
The County was named for Conrad Will, a pioneer politician, Territorial Recorder of Jackson County, member of the
Constitutional Convention of 1818, and member of the General Assemblies of the State from the first to ninth inclusive.
The County Seat is Joliet (1836-Present)-Name changed from Juliet on May 24, 1845..
As reported by the Census Bureau, the county has a total area of 849 square miles (2,200 km2), of which, 837
square miles (2,168 km2) of it is land and 12 square miles (32 km2) of it (1.47%) is water.
Will county is located in northeast Illinois.The Kankakee River, Du Page River and the Des Plaines River run through the county and join on its western border.
The Illinois and Michigan Canal and the Chicago Sanitary and Ship Canal run through Will County.
The 17,000 acre Midewin National Tallgrass Prairie is a US Forest Service
park in the county. Channahon State Park and Des Plaines Fish and
Wildlife Area are located in this county and part of Kankakee River
State Park.
Bordering counties are as follows:
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