Illinois Outline Illinois Demographics by Cubit

Mind-boggled by Illinois Demographics?

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Get the Illinois demographic data that you need. You can get the most current Illinois data from the US Census Bureau without spending 8 to 10 high-value hours searching the internet.

  • The Illinois population is 12,801,539 people according to the US Census Bureau's 2016 Population Estimates Program.
  • The Illinois median household income in the past 12 months is $57,574 in 2015 inflation-adjusted dollars according to the US Census Bureau's 2015 American Community Survey.
  • Illinois has 5,303,675 housing units according to the US Census Bureau's 2015 American Community Survey.

Skip Hours of Internet Research.

Get Radius Reports for 3 rings around any location in Illinois for just $49.

  • The most current data
  • Trustworthy — from US government data sources
  • Easy to Understand — jargon-free data
  • Most Popular data — like population, income & age
  • Confidence — includes proper citations & footnotes
  • Time Savings — Our customers tell us these reports save 10+ hours of internet research, data pulling & formatting.

To learn more, click on the letter that the name of your city or county begins with.

How Current are the Data?

The Illinois demographics on this site are the most current data available from the US Census Bureau.

Currently, most data points are from 2015 datasets – specifically the 2015 American Community Survey (ACS) 5 year dataset. We use the Census’ ACS 5 year dataset for 3 reasons.

  1. It’s updated every year.
  2. It typically has the smallest margins of error of the Census’ ACS datasets.
  3. It allows for apples to apples comparisons of large geographies to small geographies (i.e. state data to city data).

We’re constantly updating the Radius Reports and this site with the most current data throughout the year.

Got questions about these Illinois demographics? Call us at 1-800-939-2130.

Illinois Counties by Population

1 Cook County 5,203,499
2 DuPage County 929,368
3 Lake County 703,047
4 Will County 689,529
5 Kane County 531,715
6 McHenry County 307,004
7 Winnebago County 285,873
8 Madison County 265,759
9 St. Clair County 262,759
10 Champaign County 208,419

Illinois Cities by Population

1 Chicago 2,704,958
2 Aurora 201,110
3 Joliet 148,262
4 Rockford 147,651
5 Naperville 147,122
6 Springfield 115,715
7 Peoria 114,265
8 Elgin 112,123
9 Waukegan 88,182
10 Champaign 86,637

Illinois Zip Codes by Population

1 60629 114,982
2 60618 97,324
3 60639 91,379
4 60632 91,310
5 60623 88,635
6 60647 88,269
7 60804 84,361
8 60617 82,213
9 60608 79,607
10 60625 78,731

About Us

Illinois-Demographics.com is made by Cubit – a demographic data provider. Call us at 1-800-939-2130 or email us.

25 Combined years Cubit's co-founders have been working with data.

Cubit Founders Kristen and Anthony

4,664 Cubit Customers since 2009.

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