Historedia
AmericasEvent

Will County, Illinois formed

When
1836
Where
Will County, Illinois
Episodes
1

Will County, Illinois, was established on January 12, 1836, from portions of Cook and Iroquois Counties. Joliet serves as the county seat, located in the northeastern part of the state. The county is part of the Chicago metropolitan area's collar counties. Government operations began in a courthouse erected in 1837.

Episodes

  1. 12 January 1836 · Will County, IllinoisEstablishment of Will County

    Will County was created on January 12, 1836, from Cook and Iroquois Counties, establishing Joliet as its seat.

Background and detail

Formation and Origin. Will County was officially formed on January 12, 1836, by separating land from Cook and Iroquois Counties. The county is situated in the northeastern part of Illinois and is recognized as one of the five collar counties within the Chicago metropolitan area. This administrative creation established the boundaries that define the region's current political geography.

County Seat and Governance. Joliet functions as the county seat of Will County, located approximately 40 miles southwest of Chicago. The county government has operated from a succession of courthouses, with the first structure erected in 1837. Joliet is also partially situated in Kendall County, highlighting its dual administrative status within the state.

Regional Context. The formation of Will County occurred shortly before the economic depression of 1837. Joliet, the seat, had previously incorporated as a village but petitioned to rescind the incorporation to reduce tax expenses. The county's location in northeastern Illinois places it within the broader Chicago metropolitan area, influencing its development and administrative connections.

People involved

  • Will · Member of the first Illinois Constitutional Convention and the Illinois legislature until his death in 1835; identity unresolved

Sources

  1. Will County, Illinois Wikipedia, revision of 2026-09-17
  2. Joliet, Illinois Wikipedia, revision of 2026-09-20

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.