page_title: Will County, Illinois
hierarchical_section_title: Will County, Illinois
context_page_description: Will County is a county in the northeastern part of the state of Illinois. According to the 2010 census, it had a population of 677,560, an increase of 34.9% from 502,266 in 2000, making it Illinois's fourth-most populous county. The county seat is Joliet.
  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 the 815 and 779 area codes, 630 and 331 are for far northern Will County, and 708 is for eastern Will County.
context_section_description: Will County is a county in the northeastern part of the state of Illinois. According to the 2010 census, it had a population of 677,560, an increase of 34.9% from 502,266 in 2000, making it Illinois's fourth-most populous county. The county seat is Joliet.
  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 the 815 and 779 area codes, 630 and 331 are for far northern Will County, and 708 is for eastern Will County.
caption: Location within the U.S. state of Illinois