Sitemap to all pages covering the state of Illinois. Contributions and photography for the Illinois guides from Alex Nitzman, Andy Field, Brent Ivy, Justin Cozart, Kelly Nitzman, Peter Johnson and Thomas Decker.
Highway Guides
Interstates
- Interstate 39
- Interstate 55
- Interstate 57
- Interstate 64
- Interstate 70
- Interstate 74
- Interstate 80
- Interstate 88
- Interstate 155
- Interstate 255
- Interstate 270
- Interstate 180
- Interstate 280
- Interstate 290
- Interstate 474
- Business Loop I-55 – Lincoln
- Business Loop I-55 – Bloomington-Normal
- Business Loop I-72 – Jacksonville
U.S. Highways
State Routes
Population Statistics
| State Population | |||||
|---|---|---|---|---|---|
| 12,901,563 | |||||
| Metropolitan Populations | |||||
| Chicago-Naperville-Joliet | 7,990,248 | Lake County-Kenosha County, IL-WI | 876,918 | ||
| Rockford | 354,394 | Peoria | 372,487 | ||
| Champaign-Urbana | 224,191 | Springfield | 207,389 | ||
| Bloomington-Normal | 165,298 | Decatur | 108,328 | ||
| Top County Populations | |||||
| Cook | 5,285,107 | DuPage | 929,192 | ||
| Lake | 710,241 | Will | 673,586 | ||
| Kane | 501,021 | McHenry | 315,943 | ||
| Winnebago | 298,759 | Madison | 267,347 | ||
| Top City Populations | |||||
| Chicago | 2,853,114 | Aurora | 171,782 | ||
| Rockford | 157,272 | Joliet | 146,125 | ||
| Naperville | 143,117 | Springfield | 117,352 | ||
| Peoria | 114,114 | Elgin | 106,330 | ||
| Waukegan | 91,138 | Cicero | 80,976 | ||
| Sources: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2000 to July 1, 2008; Annual Estimates of the Population for Counties of Illinois: April 1, 2000 to July 1, 2007; Annual Estimates of the Resident Population for Incorporated Places Over 100,000, Ranked by July 1, 2008 Population: April 1, 2000 to July 1, 2008; Annual Estimates of the Population for Incorporated Places in Illinois, Listed Alphabetically: April 1, 2000 to July 1, 2007 |
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About Illinois
- Capital:
Springfield - Nickname: Prairie State
- State Flower: Purple Violet
- State Bird: Cardinal
- State Tree: White Oak
- Total Interstate Mileage: 2,203.42
- Land Area: 57,918 square miles
- Highest Point: Charles Mound 1,235 feet
- Lowest Point: Mississippi River in Alexander County 279 feet
- Number of Counties: 102
- Statehood: 21st state; admitted December 3, 1818
Major League Sports Franchises
- Chicago Bears (NFL)
- Chicago Blackhawks (NHL)
- Chicago Bulls (NBA)
- Chicago Cubs (MLB)
- Chicago Fire (MLS)
- Chicago White Sox (MLB)
- Chicago Cardinals, relocated in 1959 to St. Louis and eventually Phoenix.
- Chicago Zephyrs, relocated in 1963 to Baltimore and renamed the Bullets, later moving again to Washington and eventually changing names to the Wizards.
- Tri-Cities Blackhawks, relocated to Milwaukee in 1951, later becoming the Atlanta Hawks in 1968.
Major Motorsport Speedways
- Chicagoland Speedway
Updated January 1, 2020.