Illinois (US State) – The Best Guide, Must Knows & Fun Facts

Petr Novák

Illinois is a populous state in the American Midwest. The most important city in Illinois (not Illinois) is Chicago, very popular among Czech immigrants. Antonín Josef Čermák (Anton “Tony” Joseph Cermak), a native of Kladno, has left an indelible mark on the city’s history. He was mayor of Chicago between 1931 and 1933, and was shot by an assassin who was aiming at President Roosevelt.

Illinois (US State) – The Best Guide, Must Knows & Fun Facts

Map of Illinois / Where is Illinois?

Table of Contents
  1. Basic Information About Illinois
  2. What to See in Illinois
  3. Fun Facts about Illinois
  4. Weather in Illinois
  5. Largest Cities in Illinois
  6. Food Prices in Illinois
  7. State Symbols of Illinois

Basic Information About Illinois

What to See in Illinois

  1. City of Chicago
  2. Cloud Gate Arch in Chicago
  3. Millennium Park in Chicago
  4. Art Institute of Chicago
  5. The Abraham Lincoln Presidential Library and Museum in Springfield
  6. Lake Michigan
  7. The 360 Chicago observation deck
  8. Abraham Lincoln House in Springfield
  9. Willis Tower Skyscraper
  10. Wrigley Field baseball stadium in Chicago

You can post tips for other sights and places of interest in Illinois in the discussion.

Fun Facts about Illinois

Date Illinois entered the Union

December 3, 1818 (21st in order)

Illinois state nickname

Land of Lincoln

The Highest Mountain in Illinois

Charles Mound (376 metres)

Rivers in Illinois

  1. Mississippi River (3,730 km)
  2. Ohio River (1,579 km)
  3. Wabash River (810 km)
  4. Kaskaskia River (523 km)
  5. Rock River (481 km)

Airports in Illinois

  1. Chicago O’Hare International Airport
  2. Chicago Midway international Airport
  3. General Downing – Peoria International Airport
  4. Quad City International Airport
  5. Central Illinois Regional Airport at Bloomington-Normal

Illinois Sports Teams

  • NFL (American football): Chicago Bears
  • MLB (baseball): Chicago White Sox, Chicago Cubs
  • MLS (soccer): Chicago Fire
  • NHL (ice hockey): Chicago Blackhawks
  • NBA (basketball): Chicago Bulls

University of Illinois

  • University of Chicago
  • Northwestern University
  • University of Illinois

ZIP Codes


Weather in Illinois | Average temperatures in Illinois | Average precipitation in Illinois

Weather in Illinois

Most of the state of Illinois is characterized by weather with hot, muggy summers and harsh winters. Northern Illinois, in particular, tends to be rich in snowfall. Winter temperatures in Chicago usually range between -7 °C and +3 °C. In the southernmost part of the state, winters tend to be milder, with average temperatures about 5 °C higher than in the north.

In summer, Chicago’s summer temperatures range from 18 °C to 30 °C in the shade. Storms are common in Illinois, and about 30 tornadoes sweep through the state each year.

Current Forecasts:

Largest Cities in Illinois

# City Population Map
1 Chicago 2,695,598 Show on Map
2 Aurora 197,899 Show on Map
3 Rockford 152,871 Show on Map
4 Joliet 147,433 Show on Map
5 Naperville 141,853 Show on Map
6 Springfield 116,250 Show on Map
7 Peoria 115,007 Show on Map
8 North Peoria 113,004 Show on Map
9 Elgin 108,188 Show on Map
10 Waukegan 89,078 Show on Map

Food Prices in Illinois

  • McDonalds Restaurant McMeal prices: $8.00
  • Restaurant Draft Beer (0.5L): $5.00
  • Cappuccino in restaurant: $4.24
  • Coca-Cola in restaurant (0.33 l): $1.99
  • Milk (1 l): $0.78
  • Bread (500 g): $3.05
  • Rice (1 kg): $4.61
  • Egg (12 pcs): $2.30
  • Cheese (1 kg): $11.95
  • Boneless chicken breast (1 kg): $9.85
  • Beef Loin (1 kg): $12.61
  • Apples (1 kg): $4.53
  • Bananas (1 kg): $1.53
  • Oranges (1 kg): $3.81
  • Tomatoes (1 kg): $4.74
  • Potatoes (1 kg): $3.13
  • Water (1.5 l bottle): $2.15
  • Bottle beer (0.5 l bottle): $2.31
  • Pack of Marlboro cigarettes: $14.50

Grocery prices in Chicago effective January 2021. Take these as a guide, they vary widely from store to store. Tax is included in the price.

Illinois Flag | Illinois State Emblem

State Symbols of Illinois

  • Fossils: tullimonstrum gregarium
  • Flower: violet
  • Field Dance: Square Dance
  • Mineral: fluorite
  • Motto: State Sovereignty, National Union (Sovereign State, United Nation)
  • Motto: monarch migratory
  • Animal: Tiger tiger monkey
  • Fruit: Gold Rush apple
  • Plasma: ornamental turtle
  • Bird: red cardinal
  • Fish: Sunfish: Sunfish:
  • Snack: popcorn
  • Tree: white oak
  • Animal: White-tailed deer

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