Will County, Illinois

Will County
Will County
County
	Flanders House in Plainfield (1840), Midewin National Tallgrass Prairie.
	Location within the U.S. state of Illinois
	Illinois's location within the U.S.
	Coordinates: 41°26′42″N 87°58′43″W / 41.44503°N 87.97866°W
Country	United States
State	Illinois
Founded	January 12, 1836
Named for	Conrad Will
Seat	Joliet
Largest city	Joliet
Area
• Total	849 sq mi (2,200 km2)
• Land	837 sq mi (2,170 km2)
• Water	12 sq mi (30 km2) 1.5%
Population (2020)
• Total	696,355
• Density	820/sq mi (320/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional districts	1st, 2nd, 11th, 14th
Website	www.willcountyillinois.com

Will County is a county in the northeastern part of the state of Illinois. According to the 2020 census, it had a population of 696,355, an increase of 2.8% from 677,560 in 2010, making it Illinois's fourth-most populous county.^[1] The county seat is Joliet.^[2] Will County is one of the five collar counties of the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area. The portion of Will County around Joliet uses area codes 815 and 779, while 630 and 331 are for far northern Will County and 708 is for central and eastern Will County.

^ "U.S. Census Bureau QuickFacts: Will County, Illinois". www.census.gov. Retrieved August 29, 2021.
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.

[census.gov-1] "U.S. Census Bureau QuickFacts: Will County, Illinois". www.census.gov. Retrieved August 29, 2021.

[GR6-2] "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.

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