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State Facts for Students

Illinois flagIllinois

Population
  2010 2019
Population 12,830,632 12,671,821
Rank 5 6
Median Age 36.6 38.6
   
Total 8 year-olds 171,594 155,612
Boys 87,660 79,960
Girls 83,934 75,652
Total 9 year-olds 174,883 156,503
Boys 88,889 80,165
Girls 85,994 76,338
Total 10 year-olds 175,927 156,110
Boys 89,700 79,467
Girls 86,227 76,643
Total 11 year-olds 174,022 161,245
Boys 88,850 81,906
Girls 85,172 79,339
Total 12 year-olds 174,671 162,519
Boys 89,449 82,460
Girls 85,222 80,059
Total 13 year-olds 175,618 162,807
Boys 89,445 82,961
Girls 86,173 79,846
Total 14 year-olds 179,210 163,337
Boys 91,716 83,691
Girls 87,494 79,646
 
How People Get to Work: 2010 2019
Drive Alone 73.8% 72.4%
Car Pool 8.7% 7.6%
Public Transportation 8.5% 9.6%
Work at Home 4.3% 5.4%
 
Computer and Internet Use: 2019
Homes with a Computer 92.2%

Geography
  2010
Capital Springfield
Largest City Chicago
Second Largest City Aurora
Persons Per Square Mile 231.1

Business
  2010 2018
Dentist Offices 5,909 6,009
Amusement Parks 18 10
Fast-Food Restaurants 9,069 10,460
Toy Stores 362 334
Video/Disc Rental Stores 471 150
Zoos & Botanical Gardens 14 21
Candy & Nut Stores 236 226
Pet & Pet Supply Stores 353 372
Ice Cream & Frozen Dessert Makers 17 25

Note: As is the case with all surveys, statistics from sample surveys are subject to sampling and nonsampling error.

A value of NA indicates that there is no data for that time period, due to there being less than three establishments. A value of X indicates that data are not applicable for the current region.

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History

  • Date of Statehood: December 3, 1818
  • Population 1820: 55,211
  • Population 1850: 851,470
  • Population 1900: 4,821,550
  • Population 1950: 8,712,176
  • Population 2000: 12,419,293
  • Population 2010: 12,830,632

I never knew that! *

  • Nickname : Prairie State
  • Slogan : Land of Lincoln
  • Flower : Purple Violet
  • Tree : White Oak
  • Bird : Cardinal
  • Mammal : White-tailed deer
  • Snack : Popcorn
  • Fossil : Tully-Monster

Who told you this stuff?

The U.S. Census Bureau takes a census of the population every 10 years, and censuses of economic activity and governments every five years. And every year, the Census Bureau conducts more than 100 other surveys. Data on this page come from the 2010 Census, the American Community Survey, Population Estimates, County Business Patterns, and Puerto Rico Community Survey.

How are these data collected?

The U.S. Census Bureau sends questionnaires in the mail or contacts businesses and households to participate in its surveys.

* State and Island Area symbol information was obtained from various non-Census Bureau resources including state web sites, educational web sites, and commercial entities.

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