Jefferson County, Illinois

County in Illinois, United States

County in Illinois

Jefferson County

County

Jefferson County Courthouse in Mount Vernon

Location within the U.S. state of Illinois

Illinois's location within the U.S.

Coordinates: 38°18′N 88°55′W﻿ / ﻿38.3°N 88.92°W﻿ / 38.3; -88.92
Country|  United States
State|  Illinois
Founded| 1819
Named after| Thomas Jefferson
Seat| Mount Vernon
Largest city| Mount Vernon
Area

• Total

| 584 sq mi (1,510 km2)
• Land| 571 sq mi (1,480 km2)
• Water| 13 sq mi (30 km2)  2.2%
Population

(2020)

• Total

| 37,113

• Estimate

(2023)

| 36,320
• Density| 64/sq mi (25/km2)
Time zone| UTC−6 (Central)
• Summer (DST)| UTC−5 (CDT)
Congressional district| 12th
Website| www.jeffersoncountyillinois.com

Jefferson County is a county located in the southern part of the U.S. state of Illinois. According to the 2020 census, it has a population of 37,113.[1] The county seat is Mount Vernon.[2] Jefferson County contains the Mount Vernon, Illinois micropolitan area. It is located in the southern portion known locally as "Little Egypt". The western border of the county adjoins the Greater St. Louis consolidated metropolitan statistical area, the Metro-East region, and the St. Louis commuter region and market and viewing area.

## History

[edit]

The first settler in Jefferson County is believed to have been Andrew Moore. In 1810, he settled near the southeast corner of the county, near where the Goshen Road emerges from the forest of Hamilton County into what is now known as Moore's Prairie. Moore arrived from the Goshen Settlement, near Edwardsville. His migration was therefore retrograde, from the west toward the interior of the State.

In 1814, Andrew Moore departed with his eight-year-old son for Jordan's settlement, a journey from which he never returned. A skull that was believed to have been Moore's was found several years later about two miles from his cabin. Jordan's Settlement, also called Jordan's Fort, was southeast of modern Thompsonville, Illinois, about twenty miles south of Moore's cabin. This episode occurred during the War of 1812 when many of the Indian tribes were allied with the British.

In 1816, Carter Wilkey, Daniel Crenshaw and Robert Cook settled in Moore's Prairie. Daniel Crenshaw moved into Moore's cabin. This settlement is believed to be the first permanent settlement in the county.

Jefferson County was organized in 1819, out of parts of White, Edwards and Franklin Counties. It was named in honor of Thomas Jefferson, principal draftsman of the Northwest Ordinance, among other things.[3] The baseline along the northern border of the County crosses the Third Principal Meridian at the northwest corner of the county.

* Jefferson County between the time of its creation and 1821

* Jefferson County between 1821 and 1823

* Jefferson County in 1823, reduced to its current size

## Geography

[edit]

According to the U.S. Census Bureau, the county has a total area of 584 square miles (1,510 km2), of which 571 square miles (1,480 km2) is land and 13 square miles (34 km2) (2.2%) is water.[4]

### Climate and weather

[edit]

Mount Vernon, Illinois

Climate chart (explanation)

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2.5

2.7

4.4

4.6

3.6

3.6

3.3

3.1

2.9

4.4

3.2

█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
Source: The Weather Channel[5]
| Metric conversion

101

113

116

111

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

In recent years, average temperatures in the county seat of Mount Vernon have ranged from a low of 19 °F (−7 °C) in January to a high of 88 °F (31 °C) in July, although a record low of −21 °F (−29 °C) was recorded in January 1994 and a record high of 114 °F (46 °C) was recorded in July 1936. Average monthly precipitation ranged from 2.45 inches (62 mm) in January to 4.58 inches (116 mm) in May.[5]

### Major highways

[edit]

* Interstate 57
* Interstate 64
* U.S. Highway 51
* Illinois Route 15
* Illinois Route 37
* Illinois Route 142
* Illinois Route 148

### Transit

[edit]

* South Central Transit
* List of intercity bus stops in Illinois

### Adjacent counties

[edit]

* Marion County – north
* Wayne County – northeast
* Hamilton County – southeast
* Franklin County – south
* Perry County – southwest
* Washington County – west

## Demographics

[edit]

Historical population Census| Pop.| Note| %±

|
|
|

1820| 691| | —
1830| 2,555| | 269.8%
1840| 5,762| | 125.5%
1850| 8,109| | 40.7%
1860| 12,965| | 59.9%
1870| 17,864| | 37.8%
1880| 20,686| | 15.8%
1890| 22,590| | 9.2%
1900| 28,133| | 24.5%
1910| 29,111| | 3.5%
1920| 28,480| | −2.2%
1930| 31,034| | 9.0%
1940| 34,375| | 10.8%
1950| 35,892| | 4.4%
1960| 32,315| | −10.0%
1970| 31,446| | −2.7%
1980| 36,552| | 16.2%
1990| 37,020| | 1.3%
2000| 40,045| | 8.2%
2010| 38,827| | −3.0%
2020| 37,113| | −4.4%
2023 (est.)| 36,320| [6]| −2.1%
U.S. Decennial Census[7]
1790–1960[8] 1900–1990[9]
1990–2000[10] 2010–2013[1]

2000 census age pyramid for Jefferson County

As of the 2010 United States census, there were 38,827 people, 15,365 households, and 10,140 families residing in the county.[11] The population density was 68.0 inhabitants per square mile (26.3/km2). There were 16,954 housing units at an average density of 29.7 per square mile (11.5/km2).[4] The racial makeup of the county was 88.4% white, 8.4% black or African American, 0.6% Asian, 0.2% American Indian, 0.8% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 2.1% of the population.[11] In terms of ancestry, 24.3% were German, 15.8% were Irish, 13.6% were English, and 10.2% were American.[12]

Of the 15,365 households, 30.1% had children under the age of 18 living with them, 50.0% were married couples living together, 11.4% had a female householder with no husband present, 34.0% were non-families, and 29.1% of all households were made up of individuals. The average household size was 2.38 and the average family size was 2.92. The median age was 40.6 years.[11]

The median income for a household in the county was $41,161 and the median income for a family was $51,262. Males had a median income of $41,193 versus $29,645 for females. The per capita income for the county was $21,370. About 12.4% of families and 17.1% of the population were below the poverty line, including 24.8% of those under age 18 and 10.7% of those age 65 or over.[13]

## Agencies

[edit]

In 2015 the county police department announced that the words "In God We Trust" will be on police squad cars.[14]

Jeff Bullard is the current Sheriff of Jefferson County.

## Politics

[edit]

Jefferson is politically a fairly typical “anti-Yankee” Southern Illinois county. Opposition to the “Yankee” Republican Party and that party's Civil War meant that Jefferson County voted solidly Democratic until Theodore Roosevelt carried the county in his 1904 landslide. It was to again vote Republican in the greater landslides of 1920 and 1928, but otherwise was firmly Democratic until World War II.

Following the New Deal, Jefferson became something of a bellwether county, voting for every winning presidential candidate between 1928 and 2004 except in the Catholicism-influenced 1960 election, and that of 1988 which was heavily influenced by a major Midwestern drought. Disagreement with the Democratic Party's liberal views on social issues since the 1990s has caused a powerful swing to the GOP in the past quarter-century:[15] as is typical of the Upland South, Barack Obama in 2012 and Hillary Clinton did far worse than any previous Democrat.

United States presidential election results for Jefferson County, Illinois[16] Year  | Republican | Democratic | Third party(ies)

|
|
|

No.  | % | No.  | % | No.  | %
2024 | 12,189  | 72.97% | 4,240  | 25.38%  | 275  | 1.65%
2020 | 12,476  | 71.55% | 4,608  | 26.43%  | 352  | 2.02%
2016 | 11,695  | 68.80% | 4,425  | 26.03%  | 879  | 5.17%
2012 | 9,811  | 60.12% | 6,089  | 37.31%  | 420  | 2.57%
2008 | 9,302  | 54.02% | 7,462  | 43.33%  | 457  | 2.65%
2004 | 10,160  | 59.95% | 6,713  | 39.61%  | 75  | 0.44%
2000 | 8,362  | 54.44% | 6,685  | 43.52%  | 313  | 2.04%
1996 | 5,937  | 39.63%  | 7,263  | 48.48% | 1,781  | 11.89%
1992 | 5,497  | 31.24%  | 8,665  | 49.24% | 3,435  | 19.52%
1988 | 7,624  | 49.42%  | 7,729  | 50.10% | 73  | 0.47%
1984 | 9,642  | 57.10% | 7,200  | 42.64%  | 43  | 0.25%
1980 | 8,972  | 54.91% | 6,761  | 41.38%  | 607  | 3.71%
1976 | 7,422  | 44.93%  | 8,989  | 54.41% | 109  | 0.66%
1972 | 9,448  | 59.40% | 6,396  | 40.21%  | 61  | 0.38%
1968 | 7,367  | 47.63% | 6,476  | 41.87%  | 1,624  | 10.50%
1964 | 6,248  | 39.29%  | 9,653  | 60.71% | 0  | 0.00%
1960 | 9,841  | 55.84% | 7,784  | 44.16%  | 0  | 0.00%
1956 | 9,637  | 54.36% | 8,090  | 45.64%  | 0  | 0.00%
1952 | 9,841  | 53.03% | 8,698  | 46.87%  | 19  | 0.10%
1948 | 7,393  | 45.30%  | 8,928  | 54.70% | 0  | 0.00%
1944 | 7,916  | 47.83%  | 8,496  | 51.33% | 139  | 0.84%
1940 | 8,692  | 44.09%  | 10,887  | 55.22% | 136  | 0.69%
1936 | 7,290  | 41.26%  | 10,240  | 57.96% | 138  | 0.78%
1932 | 5,333  | 35.54%  | 9,495  | 63.28% | 177  | 1.18%
1928 | 7,326  | 55.08% | 5,905  | 44.40%  | 70  | 0.53%
1924 | 5,406  | 44.57%  | 6,258  | 51.59% | 466  | 3.84%
1920 | 5,711  | 53.57% | 4,772  | 44.77%  | 177  | 1.66%
1916 | 6,028  | 46.35%  | 6,685  | 51.40% | 292  | 2.25%
1912 | 1,834  | 27.73%  | 3,237  | 48.94% | 1,543  | 23.33%
1908 | 3,210  | 47.30%  | 3,377  | 49.76% | 200  | 2.95%
1904 | 3,063  | 51.33% | 2,462  | 41.26%  | 442  | 7.41%
1900 | 2,805  | 44.22%  | 3,332  | 52.53% | 206  | 3.25%
1896 | 2,603  | 41.27%  | 3,588  | 56.89% | 116  | 1.84%
1892 | 1,949  | 37.24%  | 2,332  | 44.55% | 953  | 18.21%

## Communities

[edit]

### Cities

[edit]

* Mount Vernon
* Nason

### Villages

[edit]

* Belle Rive
* Bluford
* Bonnie
* Dix
* Ina
* Waltonville
* Woodlawn

### Census-designated place

[edit]

* Opdyke

### Other unincorporated communities

[edit]

* Bakerville
* Boyd
* Camp Ground
* Dareville
* Divide
* Drivers
* Harmony
* Roaches
* Scheller
* Texico

### Townships

[edit]

Jefferson County is divided into sixteen townships:

* Bald Hill
* Blissville
* Casner
* Dodds
* Elk Prairie
* Farrington
* Field
* Grand Prairie
* McClellan
* Moore's Prairie
* Mt. Vernon
* Pendleton
* Rome
* Shiloh
* Spring Garden
* Webber

## Education

[edit]

School districts include:[17]

K-12:

* Bluford Unit School District 318
* Hamilton County Community Unit School District 10
* Sesser-Valier Community Unit School District 196
* Waltonville Community Unit School District 1
* Wayne City Community Unit School District 100
* Woodlawn Unit District 209

Secondary:

* Benton Consolidated High School District 103
* Centralia High School District 200
* Mount Vernon Township High School District 201
* Nashville Community High School District 99 – Primary school can go to Woodlawn School
* Salem Community High School District 600

Elementary:

* Ashley Community Consolidated School District 15 – Can attend secondary school in Woodlawn
* Bethel School District 82
* Centralia School District 135
* Ewing Northern Community Consolidated District 115
* Farrington Community Consolidated School District 99 – Can attend secondary school at Bluford
* Field Community Consolidated School District 3
* Grand Prairie Community Consolidated School District 6 – Can attend secondary school in Woodlawn
* Kell Consolidated School District 2
* McClellan Community Consolidated School District 12
* Mount Vernon School District 80 – Can attend elementary school at Bluford and Woodlawn
* Opdyke-Belle Rive Community Consolidated School District 5 – Can attend secondary school at Bluford
* Spring Garden Community Consolidated School District 178
* Rome Community Consolidated School District 2 – Can attend secondary school in Woodlawn
* Summersville School District 79

## See also

[edit]

* National Register of Historic Places listings in Jefferson County, Illinois

## References

[edit]

1. ^ a b "State & County QuickFacts". United States Census Bureau. Archived from the original on June 6, 2011. Retrieved July 6, 2014.
2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
3. ^ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. pp. 168.
4. ^ a b "Population, Housing Units, Area, and Density: 2010 – County". United States Census Bureau. Archived from the original on February 12, 2020. Retrieved July 11, 2015.
5. ^ a b "Monthly Averages for Mount Vernon, Illinois". The Weather Channel. Archived from the original on October 23, 2012. Retrieved January 27, 2011.
6. ^ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023". United States Census Bureau. Archived from the original on April 7, 2020. Retrieved April 2, 2024.
7. ^ "U.S. Decennial Census". United States Census Bureau. Archived from the original on April 26, 2015. Retrieved July 6, 2014.
8. ^ "Historical Census Browser". University of Virginia Library. Archived from the original on August 11, 2012. Retrieved July 6, 2014.
9. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Archived from the original on April 24, 2014. Retrieved July 6, 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 March 27, 2010. Retrieved July 6, 2014.
11. ^ 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 11, 2015.
12. ^ "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 11, 2015.
13. ^ "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 11, 2015.
14. ^ "'In God We Trust' to be placed on Jefferson Co., IL squad cars" (Archive). KFVS. August 1, 2015. Retrieved on August 2, 2015.
15. ^ Cohn, Nate; ‘Demographic Shift: Southern Whites’ Loyalty to G.O.P. Nearing That of Blacks to Democrats’ Archived September 10, 2017, at the Wayback Machine, The New York Times, April 24, 2014
16. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Archived from the original on March 23, 2018. Retrieved November 6, 2018.
17. ^ "2020 CENSUS – SCHOOL DISTRICT REFERENCE MAP: Jefferson County, IL" (PDF). U.S. Census Bureau. Archived (PDF) from the original on July 22, 2022. Retrieved July 22, 2022. – Text list

Places adjacent to Jefferson County, Illinois

|  | Marion County | Wayne County

|
|

|  |
Washington County |

Jefferson County, Illinois

|  |
Perry County | Franklin County | Hamilton County

* v
* t
* e

Municipalities and communities of Jefferson County, Illinois, United States

County seat: Mount Vernon

Cities|

* Centralia‡
* Mount Vernon
* Nason

Map of Illinois highlighting Jefferson County

Villages|

* Belle Rive
* Bluford
* Bonnie
* Dix
* Ina
* Waltonville
* Woodlawn

Townships|

* Bald Hill
* Blissville
* Casner
* Dodds
* Elk Prairie
* Farrington
* Field
* Grand Prairie
* McClellan
* Moore's Prairie
* Mt. Vernon
* Pendleton
* Rome
* Shiloh
* Spring Garden
* Webber

CDP|

* Opdyke

Other
unincorporated
communities|

* Bakerville
* Camp Ground
* Dareville
* Divide
* Drivers
* Harmony
* Roaches
* Scheller
* Spring Garden
* Texico
* Williamsburg

Footnotes|

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

* Illinois portal
* United States portal

* v
* t
* e

Illinois Metro-East region

Counties|

* Bond
* Calhoun
* Clinton
* Jersey
* Macoupin
* Madison
* Monroe
* St. Clair

Major cities (25,000+)|

* Alton
* Belleville
* Edwardsville
* Granite City
* O'Fallon

Cities (5,000-25,000)|

* Bethalto
* Cahokia Heights
* Carlinville
* Collinsville
* Columbia
* East Alton
* East St. Louis
* Fairview Heights
* Glen Carbon
* Godfrey
* Greenville
* Highland
* Jerseyville
* Maryville
* Mascoutah
* Pontoon Beach
* Shiloh
* Staunton
* Swansea
* Troy
* Waterloo
* Wood River

Communities (1,000-5,000)|

* Albers
* Aviston
* Beckemeyer
* Benld
* Breese
* Brighton
* Bunker Hill
* Carlyle
* Caseyville
* Dupo
* Fairmont City
* Freeburg
* Germantown
* Gillespie
* Girard
* Hartford
* Lebanon
* Madison
* Marissa
* Millstadt
* Mount Olive
* New Athens
* New Baden
* Rosewood Heights
* Roxana
* St. Jacob
* Smithton
* South Roxana
* Trenton
* Valmeyer
* Venice
* Virden
* Wamac
* Washington Park
* Worden

Transit systems|

* Madison County Transit
* Metro Transit
* South Central Illinois Mass Transit District
* St. Clair County Transit District

Amtrak stations|

* Alton station
* Belleville station (former)

Interstates|

* I-55
* I-64
* I-70
* I-255
* I-270

Airports|

* MidAmerica St. Louis Airport
* St. Louis Downtown Airport
* St. Louis Metro-East Airport
* St. Louis Regional Airport
* Scott Air Force Base

Colleges|

* Kaskaskia College
* Lewis and Clark Community College
* Blackburn College
* McKendree University
* Principia College
* Southern Illinois University Edwardsville
* Southwestern Illinois College

Sports teams|

* Gateway Grizzlies (baseball: Frontier League)
* Alton River Dragons (baseball: Prospect League)

* v
* t
* e

Greater St. Louis

* Illinois
* Missouri
* United States of America

Topics|

* Culture
* Crime
* Economy
* Education
* History
* Parks
* Transportation

Central city|

* St. Louis

Largest cities
(over 50,000 in 2020)|

* Chesterfield
* Florissant
* O'Fallon (Missouri)
* St. Charles
* St. Peters

Medium-sized cities
(over 20,000 in 2020)|

* Affton CDP
* Alton
* Arnold
* Ballwin
* Belleville
* Cahokia Heights
* Collinsville
* Edwardsville
* Granite City
* Hazelwood
* Kirkwood
* Maryland Heights
* Mehlville CDP
* Oakville CDP
* O'Fallon (Illinois)
* University City
* Webster Groves
* Wentzville
* Wildwood

Largest towns
and villages
(over 10,000 in 2020)|

* Bellefontaine Neighbors
* Bridgeton
* Clayton
* Columbia
* Concord CDP
* Crestwood
* Creve Coeur
* Dardenne Prairie
* East St. Louis
* Fairview Heights
* Farmington
* Ferguson
* Festus
* Glen Carbon
* Godfrey
* Highland
* Jennings
* Lake St. Louis
* Lemay CDP
* Manchester
* Overland
* Old Jamestown CDP
* St. Ann
* Shiloh
* Spanish Lake CDP
* Swansea
* Town and Country
* Troy (Illinois)
* Troy (Missouri)
* Union
* Washington
* Waterloo
* Wood River

Missouri counties|

* Franklin
* Jefferson
* Lincoln
* St. Charles
* St. Francois
* St. Louis City
* St. Louis County
* Warren
* Washington

Illinois counties|

* Bond
* Calhoun
* Clinton
* Jersey
* Macoupin
* Madison
* Monroe
* St. Clair

Subregions|

* Metro East
* Westplex

* v
* t
* e

Southern Illinois

Counties|

* Alexander
* Bond
* Calhoun
* Clay
* Clinton
* Edwards
* Franklin
* Gallatin
* Hamilton
* Hardin
* Jackson
* Jefferson
* Jersey
* Johnson
* Lawrence
* Madison
* Marion
* Massac
* Monroe
* Perry
* Pope
* Pulaski
* Randolph
* Richland
* Saline
* St. Clair
* Union
* Wabash
* Washington
* Wayne
* White
* Williamson

Mid-sized cities (25,000+)|

* Alton
* Belleville
* Carbondale
* Collinsville
* Edwardsville
* Granite City
* O'Fallon

Small cities (10,000-25,000)|

* Cahokia Heights
* Centralia
* East St. Louis
* Fairview Heights
* Glen Carbon
* Godfrey
* Herrin
* Marion
* Mt. Vernon
* Swansea
* Wood River

Small cities (5,000-10,000)|

* Anna
* Benton
* Bethalto
* Carmi
* Carterville
* Chester
* Columbia
* Du Quoin
* East Alton
* Fairfield
* Flora
* Harrisburg
* Highland
* Jerseyville
* Maryville
* Mascoutah
* Metropolis
* Mount Carmel
* Murphysboro
* Olney
* Pinckneyville
* Pontoon Beach
* Salem
* Shiloh
* Staunton
* Troy
* Washington Park
* Waterloo
* West Frankfort

Transit systems|

* Jackson County Mass Transit District
* Madison County Transit
* Rides Mass Transit District
* South Central Illinois Mass Transit District
* St. Clair County Transit District

Amtrak stations|

* Alton station
* Carbondale station
* Centralia station
* Du Quoin station

Interstates|

* I-55
* I-64
* I-70
* I-255
* I-270
* I-57
* I-24

Airports/military bases|

* Scott Air Force Base
* MidAmerica St. Louis Airport
* St. Louis Regional Airport
* St. Louis Downtown Airport
* St. Louis Metro-East Airport
* Williamson County Regional Airport
* Kellums
* Cache River Airstrip
* Pinckneyville Duquoin Airport
* Harrisburg-Raleigh Regional Airport
* Mt. Vernon Outland Airport
* Southern Illinois Airport

Universities|

* Southern Illinois University (Carbondale)
* Southern Illinois University Edwardsville

Colleges|

* Southeastern Illinois College
* Rend Lake College
* John A. Logan College
* Shawnee Community College
* Southwestern Illinois College
* Kaskaskia College
* Wabash Valley College
* East St. Louis Community College Center
* McKendree University
* Morthland College
* Olney Central College

Sports teams based in
Southern Illinois|

* Gateway Grizzlies (baseball, Frontier League)
* Southern Illinois Miners
* Southern Illinois Salukis
* SIU Edwardsville Cougars

* v
* t
* e

State of Illinois

Springfield (capital)

Topics|

* Index
* Abortion
* African Americans
* Buildings and structures
* Census areas
* Climate change
* Crime
* Communications
* Culture
* Delegations
* Earthquakes
* Economy
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* Environment
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* Portal
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* 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
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38°18′N 88°55′W﻿ / ﻿38.30°N 88.92°W﻿ / 38.30; -88.92
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