Will County
URL: https://knowledge.ivjn.us/en/places/il-will-county.html

Will County is a county in Illinois, United States, with county seat Joliet.

## Administrative divisions

Will County is a county in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States; the county seat is [Joliet](https://knowledge.ivjn.us/en/places/il-joliet.html)[^uscb2023].

## Basic facts

- State: [Illinois](https://knowledge.ivjn.us/en/places/illinois.html)[^uscb2023]
- County seat: [Joliet](https://knowledge.ivjn.us/en/places/il-joliet.html)[^uscb2023]
- Division level: county[^uscb2023]

## Parent division

Located in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html).

## GeoNames data

- Population: about 677,560[^geonames]
- Coordinates listed by GeoNames: 41.4450, -87.9787[^geonames]
- FIPS code: il197[^geonames]

Updated: 2026-10-30

Tags:
- Administrative division https://knowledge.ivjn.us/en/tags/admin-division.html

Relations:
- Located in: Illinois https://knowledge.ivjn.us/en/places/illinois.html
- Contains places: Joliet https://knowledge.ivjn.us/en/places/il-joliet.html
- Contains places: Beecher https://knowledge.ivjn.us/en/places/il-beecher.html
- Contains places: Birds https://knowledge.ivjn.us/en/places/il-birds-84959.html
- Contains places: Bolingbrook https://knowledge.ivjn.us/en/places/il-bolingbrook.html
- Contains places: Braidwood https://knowledge.ivjn.us/en/places/il-braidwood.html
- Contains places: Channahon https://knowledge.ivjn.us/en/places/il-channahon.html
- Contains places: Crest Hill https://knowledge.ivjn.us/en/places/il-crest-hill.html
- Contains places: Crete https://knowledge.ivjn.us/en/places/il-crete.html
- Contains places: Crystal Lawns https://knowledge.ivjn.us/en/places/il-crystal-lawns.html
- Contains places: Elwood https://knowledge.ivjn.us/en/places/il-elwood.html

Mentioned in:
- Illinois https://knowledge.ivjn.us/en/places/illinois.html
- Beecher https://knowledge.ivjn.us/en/places/il-beecher.html
- Birds https://knowledge.ivjn.us/en/places/il-birds-84959.html
- Bolingbrook https://knowledge.ivjn.us/en/places/il-bolingbrook.html
- Braidwood https://knowledge.ivjn.us/en/places/il-braidwood.html
- Channahon https://knowledge.ivjn.us/en/places/il-channahon.html
- Crest Hill https://knowledge.ivjn.us/en/places/il-crest-hill.html
- Crete https://knowledge.ivjn.us/en/places/il-crete.html
- Crystal Lawns https://knowledge.ivjn.us/en/places/il-crystal-lawns.html
- Elwood https://knowledge.ivjn.us/en/places/il-elwood.html

Sources:
- Will County (Wikipedia) https://en.wikipedia.org/wiki/Will_County
- U.S. Census Bureau 2023 FIPS state and county codes https://www.census.gov/library/reference/code-lists/ansi.html
- GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip