Will County, Illinois

County in Illinois, United States

U.S. county in Illinois

Will County

U.S. county

File:Flanders House (5978683004).jpg

File:Midewin bison 2016-06-05 16.32.59 crop3.jpg

Flanders House in Plainfield (1840), Midewin National Tallgrass Prairie.

Error creating thumbnail:

Location within the U.S. state of Illinois

Illinois's location within the U.S.

Country|  United States
State|  Illinois
Founded| January 12, 1836
Named for| Dr. 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
• Estimate

(2019)[1]

| 690,743
• Density| 810/sq mi (310/km2)
Time zone| UTC−6 (Central)
• Summer (DST)| UTC−5 (CDT)
Congressional districts| 1st, 2nd, 3rd, 11th, 14th, 16th
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.[2] The county seat is Joliet.[3] 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.

## Contents

* 1 History
* 2 Geography
* 2.1 Climate and weather
* 2.2 Adjacent counties
* 3 Demographics
* 4 Government
* 5 Politics
* 6 Education
* 6.1 K-12 school districts
* 7 Transportation
* 7.1 Major highways
* 7.2 Rail
* 8 Energy infrastructure
* 8.1 Pipelines
* 8.2 Joliet Refinery
* 9 Municipalities
* 9.1 Cities
* 9.2 Villages
* 9.3 Census-designated places
* 9.4 Forts
* 9.5 Townships
* 10 See also
* 11 References
* 12 External links

## History

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Will County was formed on January 12, 1836, out of Cook and Iroquois Counties. It was named after Conrad Will, a politician and businessman involved in salt production in southern Illinois.[4] Will was a member of the first Illinois Constitutional Convention and a member of the Illinois legislature until his death in 1835. Besides its present area, the county originally included the part of Kankakee County, Illinois, north of the Kankakee River. It lost that area when Kankakee County was organized in 1852. Since then its boundaries have not changed.

36 locations in Will County are on the National Register of Historic Places.

> "WILL, a county in the E. N. E. part of Illinois, bordering on Indiana, has an area of 1,236 square miles (3,200 km2). It is intersected by the Kankakee and Des Plaines Rivers, branches of the Illinois. The surface is generally level, and destitute of timber, excepting small groves. The soil is very fertile, and much of it is under cultivation. The soil of the prairies is a deep, sandy loam, adapted to Indian corn and grass. In 1850 the county produced 527,903 bushels of Indian corn; 230,885 of wheat; 334,360 of oats; 32,043 tons of hay, and 319,054 pounds of butter. It contained 14 churches, 3 newspaper offices; 3472 pupils attending public schools, and 200 attending other schools. Quarries of building stone are worked near the county seat. The Des Plaines river furnishes water-power. The county is intersected by the Illinois and Michigan canal, by the Chicago branch of the Central railroad, the Chicago and Mississippi, and by the Chicago and Rock Island railroad. Named in honor of Conrad Will, for many years a member of the Illinois legislature. Capital, Joliet. Population 16,703."

— 1854 U.S. Gazetteer

* Will County from its 1836 creation to 1852

* Will County in 1853, reduced to its current borders by the creation of Kankakee County

## Geography

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According to the U.S. Census Bureau, the county has an area of 849 square miles (2,200 km2), of which 837 square miles (2,170 km2) is land and 12 square miles (31 km2) (1.5%) is water.[5]

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.

A number of areas are preserved as parks (over 20,000 acres (81 km2) total) under the Forest Preserve District of Will County. The 17,000 acres (69 km2) Midewin National Tallgrass Prairie is a U.S. Forest Service park in the county on the grounds of the former Joliet Arsenal. Other parks include Channahon State Park and the Des Plaines Fish and Wildlife Area.

### Climate and weather

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Joliet, Illinois

Climate chart (explanation)

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1.6

1.6

2.5

3.8

3.9

4.2

4.3

3.8

3.1

2.7

2.4

Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[6]
| Metric conversion

−11

107

110

Average max. and min. temperatures in °C
Precipitation totals in mm

In recent years, average temperatures in the county seat of Joliet have ranged from a low of 13 °F (−11 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −26 °F (−32 °C) was recorded in January 1985 and a record high of 104 °F (40 °C) was recorded in June 1988. Average monthly precipitation ranged from 1.58 inches (40 mm) in January to 4.34 inches (110 mm) in July.[6]

### Adjacent counties

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* Kane County (northwest)
* DuPage County (north)
* Cook County (northeast)
* Lake County, Indiana (east)
* Kankakee County (south)
* Grundy County (southwest)
* Kendall County (west)

## Demographics

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Historical population

Census | Pop. |  | %±
1840| 10,167| | —
1850| 16,703| | 64.3%
1860| 29,321| | 75.5%
1870| 43,013| | 46.7%
1880| 53,422| | 24.2%
1890| 62,007| | 16.1%
1900| 74,764| | 20.6%
1910| 84,371| | 12.8%
1920| 92,911| | 10.1%
1930| 110,732| | 19.2%
1940| 114,210| | 3.1%
1950| 134,336| | 17.6%
1960| 191,617| | 42.6%
1970| 249,498| | 30.2%
1980| 324,460| | 30.0%
1990| 357,313| | 10.1%
2000| 502,266| | 40.6%
2010| 677,560| | 34.9%
2020| 696,355| | 2.8%
U.S. Decennial Census[7]
1790–1960[8] 1900–1990[9]
1990–2000[10] 2010–2019[11]

As of the 2010 Census, there were 677,560 people, 225,256 households, and 174,062 families residing in the county.[12] The population density was 809.6 inhabitants per square mile (312.6/km2). There were 237,501 housing units at an average density of 283.8 per square mile (109.6/km2).[5] The racial makeup of the county was 76.0% white, 11.2% black or African American, 4.6% Asian, 0.3% American Indian, 5.8% from other races, and 2.3% from two or more races. Those of Hispanic or Latino origin made up 15.6% of the population.[12] In terms of ancestry, 21.6% were German, 18.6% were Irish, 13.3% were Polish, 11.1% were Italian, 5.9% were English, and 2.1% were American.[13]

Of the 225,256 households, 44.0% had children under 18 living with them, 61.9% were married couples living together, 10.9% had a female householder with no husband present, 22.7% were non-families, and 18.5% of all households were made up of individuals. The average household size was 2.97 and the average family size was 3.41. The median age was 35.4.[12]

The median income for a household in the county was $75,906 and the median income for a family was $85,488. Males had a median income of $60,867 versus $40,643 for females. The per capita income was $29,811. About 5.0% of families and 6.6% of the population were below the poverty line, including 9.0% of those under 18 and 5.6% of those 65 or older.[14]

## Government

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Will County is governed by a 26-member county board elected from 13 districts. Each district elects two members. The county executive, county clerk, coroner, auditor, treasurer, recorder of deeds, state's sttorney, and sheriff are all elected in a countywide vote.

## Politics

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Like most of the collar counties, Will County was once a Republican stronghold. It went Republican in all but three elections from 1892 to 1988. Since the 1990s, it has become a swing county. It voted for the national winner in every presidential election from 1980 to 2012, but Chicago-born Hillary Clinton won it along with the rest of the "collar counties" aside from McHenry in 2016.

United States presidential election results for Will County, Illinois[15] Year  | Republican | Democratic | Third party

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No. | % | No. | % | No. | %
2020 | 155,116  | 44.95%  | 183,915  | 53.29% | 6,074  | 1.76%
2016 | 132,720  | 43.63%  | 151,927  | 49.94% | 19,579  | 6.44%
2012 | 128,969  | 46.36%  | 144,229  | 51.85% | 4,967  | 1.79%
2008 | 122,597  | 42.69%  | 160,406  | 55.86% | 4,178  | 1.45%
2004 | 130,728  | 52.37% | 117,172  | 46.94%  | 1,709  | 0.68%
2000 | 95,828  | 50.00% | 90,902  | 47.43%  | 4,940  | 2.58%
1996 | 62,506  | 42.15%  | 69,354  | 46.76% | 16,444  | 11.09%
1992 | 58,337  | 38.35%  | 59,633  | 39.20% | 34,153  | 22.45%
1988 | 73,129  | 59.10% | 49,816  | 40.26%  | 786  | 0.64%
1984 | 78,684  | 63.25% | 45,193  | 36.33%  | 520  | 0.42%
1980 | 69,310  | 57.44% | 41,975  | 34.79%  | 9,373  | 7.77%
1976 | 61,784  | 53.85% | 51,103  | 44.54%  | 1,840  | 1.60%
1972 | 65,155  | 65.67% | 33,633  | 33.90%  | 430  | 0.43%
1968 | 43,630  | 49.32% | 31,576  | 35.70%  | 13,254  | 14.98%
1964 | 38,619  | 43.75%  | 49,663  | 56.25% | 0  | 0.00%
1960 | 42,575  | 50.86% | 41,056  | 49.04%  | 81  | 0.10%
1956 | 45,628  | 64.34% | 25,188  | 35.52%  | 100  | 0.14%
1952 | 38,533  | 56.34% | 29,749  | 43.50%  | 110  | 0.16%
1948 | 28,601  | 51.41% | 26,430  | 47.51%  | 597  | 1.07%
1944 | 30,058  | 52.32% | 27,085  | 47.14%  | 310  | 0.54%
1940 | 32,291  | 52.13% | 29,442  | 47.53%  | 213  | 0.34%
1936 | 25,028  | 45.25%  | 28,135  | 50.86% | 2,151  | 3.89%
1932 | 25,173  | 48.16%  | 25,798  | 49.36% | 1,295  | 2.48%
1928 | 26,081  | 55.02% | 20,877  | 44.04%  | 447  | 0.94%
1924 | 22,780  | 64.16% | 4,707  | 13.26%  | 8,018  | 22.58%
1920 | 21,746  | 76.37% | 5,410  | 19.00%  | 1,318  | 4.63%
1916 | 19,881  | 62.59% | 11,378  | 35.82%  | 506  | 1.59%
1912 | 3,331  | 19.87%  | 4,717  | 28.13%  | 8,719  | 52.00%
1908 | 10,358  | 61.29% | 5,693  | 33.68%  | 850  | 5.03%
1904 | 10,001  | 66.39% | 3,191  | 21.18%  | 1,873  | 12.43%
1900 | 10,056  | 59.22% | 6,655  | 39.19%  | 269  | 1.58%
1896 | 9,249  | 56.94% | 6,873  | 42.32%  | 120  | 0.74%
1892 | 6,720  | 49.51% | 6,434  | 47.40%  | 420  | 3.09%

## Education

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* Governors State University is a 6,000-student public university in University Park.
* Lewis University is a 5,200-student four-year private university in Romeoville.
* University of St. Francis is a 3,300-student four-year private university in Joliet.
* The county is in Community College District 525 and is served by Joliet Junior College in Joliet.[16] Joliet Junior College was the first two-year higher education institution in the United States.

### K-12 school districts

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K-12 school districts, including any with any territory in Will County, no matter how slight, even if the schools and/or administrative headquarters are in other counties:[17]

K-12:

* Beecher Community Unit School District 200U
* Coal City Community Unit School District 1
* Crete-Monee Community Unit School District 201-U
* Indian Prairie Community Unit School District 204
* Manteno Community Unit School District 5
* Naperville Community Unit District 203
* Oswego Community Unit School District 308
* Peotone Community Unit School District 207U
* Plainfield School District 202
* Reed Custer Community Unit School District 255U
* Valley View Community Unit School District 365U
* Wilmington Community Unit School District 209U

Secondary:

* Bloom Township High School District 206
* Joliet Township High School District 204
* Lincoln Way Community High School District 210
* Lockport Township High School District 205
* Minooka Community High School District 111

Elementary:

* Chaney-Monge School District 88
* Channahon School District 17
* Elwood Community Consolidated School District 203
* Fairmont School District 89
* Frankfort Community Consolidated School District 157C
* Homer Community Consolidated School District 33C
* Joliet Public School District 86
* Laraway Community Consolidated School District 70C
* Lockport School District 91
* Manhattan School District 114
* Minooka Community Consolidated School District 201
* Mokena School District 159
* New Lenox School District 122
* Richland School District 88A
* Rockdale School District 84
* Steger School District 194;
* Summit Hill School District 161
* Taft School District 90
* Troy Community Consolidated School District 30C
* Union School District 81
* Will County School District 92

## Transportation

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Will County is served by four U.S. interstate highways, four U.S. highways, and 12 Illinois highways.

### Major highways

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* Interstate 55
* Interstate 57
* Interstate 80
* File:I-355.svg Interstate 355
* U.S. Route 6
* U.S. Highway 30
* U.S. Highway 45
* U.S. Highway 52
* Illinois Route 1
* File:Illinois 7.svg Illinois Route 7
* File:Illinois 43.svg Illinois Route 43
* File:Illinois 50.svg Illinois Route 50
* File:Illinois 53.svg Illinois Route 53
* File:Illinois 59.svg Illinois Route 59
* File:Illinois 102.svg Illinois Route 102
* File:Illinois 113.svg Illinois Route 113
* File:Illinois 126.svg Illinois Route 126
* File:Illinois 129.svg Illinois Route 129
* File:Illinois 171.svg Illinois Route 171
* File:Illinois 394.svg Illinois Route 394

### Rail

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Four different Metra commuter rail lines (Metra Electric Main Line, Southwest Service, Rock Island District and Heritage Corridor) connect Will County with the Chicago Loop.

## Energy infrastructure

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### Pipelines

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Will County is a major hub in the national natural gas pipeline grid where pipelines from Canada and the Gulf of Mexico meet and then fan out to serve the Midwest. The following major energy companies own pipeline that runs through Will County:

* Alliance Pipeline
* Enbridge
* Integrys Energy Group
* Peoples Gas
* Kinder Morgan Interstate Gas Transmission
* TransCanada
* ANR Pipeline \- Fully owned & operated
* Northern Border Pipeline \- Partially owned & fully operated
* Vector Pipeline

### Joliet Refinery

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ExxonMobil owns and operates the Joliet Refinery along the Des Plaines River just east of I-55. According to ExxonMobil, the refinery employs about 600 people and was constructed in 1972.[18]

## Municipalities

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The municipalities with their population within Will County and their total population as of the 2010 census are:[19]

### Cities

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* Aurora – 11,471 (total 197,899; mostly in DuPage, Kane and Kendall counties)
* Braidwood – 6,191
* Crest Hill – 20,837
* Joliet – 137,684 (total 147,433; partly in Kendall County)
* Lockport – 24,839
* Naperville – 47,320 (total 141,853; mostly in DuPage County)
* Wilmington – 5,724

### Villages

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* Beecher – 4,359
* Bolingbrook – 71,795 (total 73,366; partly in DuPage County)
* Braceville – 1 (total 793; mostly in Grundy County)
* Channahon – 9,345 (total 12,560; partly in Grundy County)
* Coal City – 2 (total 5,587; mostly in Grundy County)
* Crete – 8,259
* Diamond – 19 (total 2,527; mostly in Grundy County)
* Elwood – 2,279
* Frankfort – 17,782 (total 17,789; partly in Cook County)
* Godley – 552 (total 601; partly in Grundy County)
* Homer Glen – 24,220
* Lemont – 3 (total 16,000; mostly in Cook and DuPage counties)
* Manhattan – 7,051
* Matteson – 0 (total 19,009; mostly in Cook County)
* Minooka – 1,803 (total 10,924; mostly in Grundy and Kendall counties)
* Mokena – 18,740
* Monee – 5,148
* New Lenox – 24,394
* Orland Park – 184 (total 56,767; mostly in Cook County)
* Park Forest – 3,303 (total 21,975; mostly in Cook County)
* Peotone – 4,142
* Plainfield – 37,502 (total 39,581; partly in Kendall County)
* Rockdale – 1,976
* Romeoville – 39,680
* Sauk Village – 0 (total 10,506; mostly in Cook County)
* Shorewood – 15,615
* Steger – 5,467 (total 9,570; partly in Cook County)
* Symerton – 87
* Tinley Park – 7,467 (total 56,703; mostly in Cook County)
* University Park – 6,856 (total 7,129; partly in Cook County)
* Woodridge – 22 (total 32,971; mostly in DuPage County)

### Census-designated places

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* Andres
* Arbury Hills
* Ballou
* Bonnie Brae
* Crystal Lawns – 1,872
* Custer Park
* Eagle Lake
* Fairmont – 2,459
* Frankfort Square – 9,276
* Goodenow
* Goodings Grove (former CDP)
* Ingalls Park – 3,314
* Lakewood Shores – 1,347
* Lockport Heights
* Lorenzo
* Marley
* Plum Valley
* Polk
* Preston Heights – 2,575
* Rest Haven
* Ridgewood
* Ritchie
* Sunnyland
* Willow Brook Estates – 2,076
* Wilton
* Wilton Center

### Forts

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* Fort Beggs

### Townships

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The 24 townships of Will County, with their populations as of the 2010 census, are:

* Channahon – 10,322
* Crete – 23,774
* Custer – 1,430
* DuPage – 87,793
* Florence – 933
* Frankfort – 57,055
* Green Garden – 4,010
* Homer – 39,059
* Jackson – 4,100
* Joliet – 87,398
* Lockport – 60,010
* Manhattan – 9,218
* Monee – 15,669
* New Lenox – 40,270
* Peotone – 4,431
* Plainfield – 80,318
* Reed – 6,948
* Troy – 45,991
* Washington – 6,263
* Wesley – 2,241
* Wheatland – 81,472
* Will – 1,821
* Wilmington – 6,193
* Wilton – 841

## See also

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## References

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Specific

1. ^ "Population and Housing Unit Estimates". Retrieved March 26, 2020.
2. ^ "U.S. Census Bureau QuickFacts: Will County, Illinois". www.census.gov. Retrieved August 29, 2021.
3. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
4. ^ "Was Dr. Conrad Will really worth his salt?" Archived October 1, 2011, at the Wayback Machine, Ledger-Sentinel, Roger Matile, June 22, 2006
5. ^ a b "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 12, 2020. Retrieved July 12, 2015.
6. ^ a b "Monthly Averages for Joliet, Illinois". The Weather Channel. Archived from the original on January 27, 2012. Retrieved January 27, 2011.
7. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved April 16, 2015.
8. ^ "Historical Census Browser". University of Virginia Library. Archived from the original on August 11, 2012. Retrieved July 9, 2014.
9. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Archived from the original on April 24, 2014. Retrieved April 16, 2014.
10. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on December 18, 2014. Retrieved July 9, 2014.
11. ^ "State & County QuickFacts". United States Census Bureau. Archived from the original on June 6, 2011. Retrieved July 9, 2014.
12. ^ a b c "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
13. ^ "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
14. ^ "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved July 12, 2015.
15. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Archived from the original on March 23, 2018. Retrieved April 29, 2018.
16. ^ retrieved 2007-02-13 Archived December 8, 2006, at the Wayback Machine
17. ^ "2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Will County, IL" (PDF). U.S. Census Bureau. Retrieved July 20, 2022. \- Text
18. ^ "Archived copy" (PDF). Archived (PDF) from the original on October 5, 2013. Retrieved August 30, 2013.`{{cite web}}`: CS1 maint: archived copy as title (link)
19. ^ "GCT-PH1 Population, Housing Units, Area, and Density: 2010 - County -- County Subdivision and Place". United States Census Bureau. Retrieved October 29, 2018.

General

* Forstall, Richard L. (editor) (1996). Population of states and counties of the United States: 1790 to 1990: from the twenty-one decennial censuses. United States Department of Commerce, Bureau of the Census, Population Division. ISBN 0-934213-48-8. `{{cite book}}`: `|first=` has generic name (help)

## External links

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Wikimedia Commons has media related to Will County, Illinois.

* No URL found. Please specify a URL (using |1= or |url=).
* Will County Board

Places adjacent to Will County, Illinois

| Kane County | DuPage County | Cook County

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|  |
Kendall County |

Will County, Illinois

| Lake County, Indiana
|  |
Grundy County | Kankakee County |

* v
* t
* e

Municipalities and communities of Will County, Illinois, United States

County seat: Joliet

Cities|

* Aurora‡
* Braidwood
* Crest Hill
* Joliet‡
* Lockport
* Naperville‡
* Wilmington

Error creating thumbnail: Map of Illinois highlighting Will County

Villages|

* Beecher
* Bolingbrook‡
* Channahon‡
* Coal City‡
* Crete
* Diamond‡
* Elwood
* Frankfort‡
* Godley‡
* Homer Glen
* Lemont‡
* Manhattan
* Matteson‡
* Minooka‡
* Mokena
* Monee
* New Lenox
* Orland Park‡
* Oswego‡
* Park Forest‡
* Peotone
* Plainfield‡
* Rockdale
* Romeoville
* Sauk Village‡
* Shorewood
* Steger‡
* Symerton
* Tinley Park‡
* University Park‡
* Woodridge‡

Townships|

* Channahon
* Crete
* Custer
* DuPage
* Florence
* Frankfort
* Green Garden
* Homer
* Jackson
* Joliet
* Lockport
* Manhattan
* Monee
* New Lenox
* Peotone
* Plainfield
* Reed
* Troy
* Washington
* Wesley
* Wheatland
* Will
* Wilmington
* Wilton

CDPs|

* Andres
* Arbury Hills
* Bonnie Brae
* Crystal Lawns
* Custer Park
* Eagle Lake
* Fairmont
* Frankfort Square
* Goodenow
* Ingalls Park
* Lakewood Shores
* Lockport Heights
* Lorenzo
* Marley
* Plum Valley
* Preston Heights
* Rest Haven
* Ridgewood
* Ritchie
* Sunnyland
* Willowbrook
* Wilton Center

Other
communities|

* Ballou
* Pierce
* Polk
* Welco Corners
* Wilton

Ghost town|

* Goodings Grove
* Millsdale

Footnotes|

‡This populated place also has portions in an adjacent county or counties

* United States portal

* v
* t
* e

Chicago metropolitan area

Major city|

* Chicago

Cities
(over 30,000 in 2010)|

* Aurora
* Berwyn
* Calumet City
* Chicago Heights
* Crystal Lake
* DeKalb
* Des Plaines
* Elgin
* Elmhurst
* Evanston
* Gary
* Hammond
* Joliet
* Kenosha
* Naperville
* North Chicago
* Park Ridge
* Portage
* St. Charles
* Valparaiso
* Waukegan
* Wheaton

Towns and villages
(over 30,000 in 2010)|

* Addison
* Algonquin
* Arlington Heights
* Bartlett
* Bolingbrook
* Buffalo Grove
* Carol Stream
* Carpentersville
* Cicero
* Downers Grove
* Elk Grove Village
* Glendale Heights
* Glenview
* Gurnee
* Hanover Park
* Hoffman Estates
* Lombard
* Merrillville
* Mount Prospect
* Mundelein
* Northbrook
* Oak Lawn
* Oak Park
* Orland Park
* Oswego
* Palatine
* Plainfield
* Romeoville
* Schaumburg
* Skokie
* Streamwood
* Tinley Park
* Wheeling
* Woodridge

Counties|

* Cook
* DeKalb
* DuPage
* Grundy
* Jasper
* Kane
* Kendall
* Kenosha
* Lake, IL
* Lake, IN
* McHenry
* Newton
* Porter
* Will

Regions|

* Great Lakes
* Northern Illinois
* Northern Indiana

Sub-regions|

* Chicago Southland
* Eastern Ridges and Lowlands
* Fox Valley (Illinois)
* Golden Corridor
* Illinois Technology and Research Corridor
* North Shore (Chicago)
* Northwest Indiana

Illinois, United States

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State of Illinois

Springfield (capital)

Topics|

* Index
* Buildings and structures
* Census areas
* Communications
* Culture
* Delegations
* Earthquakes
* Economy
* Education
* Energy
* Environment
* Geography
* Government
* Health
* History
* Languages
* Law
* Music
* People
* Politics
* Portal
* Protected areas
* Society
* Sports
* Symbols
* Tourism
* Transportation
* Windmills

Regions|

* American Bottom
* Bloomington–Normal metropolitan area
* Central Illinois
* Champaign–Urbana metropolitan area
* Chicago metropolitan area
* Collar counties
* Corn Belt
* Driftless Area
* Forgottonia
* Fox Valley
* Illinois–Indiana–Kentucky tri-state area
* Metro East
* Metro Lakeland
* Mississippi Alluvial Plain
* North Shore
* Northern Illinois
* Northwestern Illinois
* Peoria metropolitan area
* Quad Cities
* River Bend
* Rockford metropolitan area
* Southern Illinois
* Wabash Valley

Municipalities|

* Alton/Granite City/Edwardsville
* Arlington Heights/Palatine
* Aurora/Naperville/Oswego/Plainfield
* Bartlett/Hanover Park/Streamwood
* Belleville/East St. Louis/Collinsville/O'Fallon
* Berwyn/Cicero
* Bloomington/Normal
* Bolingbrook/Romeoville
* Buffalo Grove/Wheeling
* Calumet City
* Canton
* Carbondale
* Carol Stream/Glendale Heights
* Centralia
* Champaign/Urbana
* Charleston/Mattoon
* Chicago
* Chicago Heights
* Crystal Lake/Algonquin
* Danville
* Decatur
* DeKalb/Sycamore
* Des Plaines/Mount Prospect/Park Ridge
* Dixon
* Downers Grove/Woodridge
* Effingham
* Elgin/Carpentersville
* Elmhurst/Lombard/Addison
* Evanston/Skokie
* Freeport
* Galesburg
* Glenview/Northbrook
* Harrisburg
* Jacksonville
* Joliet
* Kankakee/Bradley/Bourbonnais
* Lincoln
* Macomb
* Marion/Herrin
* Moline/East Moline/Rock Island
* Mount Vernon
* Mundelein
* Oak Lawn
* Oak Park
* Orland Park/Tinley Park
* Ottawa/Streator/LaSalle/Peru
* Peoria/Pekin/East Peoria/Morton/Washington
* Pontiac
* Quincy
* Rochelle
* Rockford/Belvidere/Machesney Park/Loves Park
* St. Charles
* Schaumburg/Hoffman Estates/Elk Grove Village
* Springfield
* Sterling/Rock Falls
* Taylorville
* Waukegan/North Chicago/Gurnee
* Wheaton

Counties|

* Adams
* Alexander
* Bond
* Boone
* Brown
* Bureau
* Calhoun
* Carroll
* Cass
* Champaign
* Christian
* Clark
* Clay
* Clinton
* Coles
* Cook
* Crawford
* Cumberland
* DeKalb
* DeWitt
* Douglas
* DuPage
* Edgar
* Edwards
* Effingham
* Fayette
* Ford
* Franklin
* Fulton
* Gallatin
* Greene
* Grundy
* Hamilton
* Hancock
* Hardin
* Henderson
* Henry
* Iroquois
* Jackson
* Jasper
* Jefferson
* Jersey
* Jo Daviess
* Johnson
* Kane
* Kankakee
* Kendall
* Knox
* Lake
* LaSalle
* Lawrence
* Lee
* Livingston
* Logan
* Macon
* Macoupin
* Madison
* Marion
* Marshall
* Mason
* Massac
* McDonough
* McHenry
* McLean
* Menard
* Mercer
* Monroe
* Montgomery
* Morgan
* Moultrie
* Ogle
* Peoria
* Perry
* Piatt
* Pike
* Pope
* Pulaski
* Putnam
* Randolph
* Richland
* Rock Island
* Saline
* Sangamon
* Schuyler
* Scott
* Shelby
* St. Clair
* Stark
* Stephenson
* Tazewell
* Union
* Vermilion
* Wabash
* Warren
* Washington
* Wayne
* White
* Whiteside
* Will
* Williamson
* Winnebago
* Woodford

Coordinates: 41°26′N 87°59′W﻿ / ﻿41.44°N 87.98°W﻿ / 41.44; -87.98
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*[%±]: Percent change
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