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Illinois County Map Post Cover

Illinois County Map and Population List in Excel

GENERAL INFO

The US state Illinois (IL) is the 6th largest state by population and 25th biggest state by area. Illinois has 102 counties ranking it the 7th state with the most counties in USA. See below some basic information about the state:

Country:United States
State:Illinois
Abbreviation:IL
Capital:Springfield
Largest City:Chicago
Population:12,671,821
Population rank in US:6th
Total Area [mi²]:57,915
Total Area [km²]:149,997
Area rank in US:25th
Number of Counties:102

ILLINOIS COUNTY POPULATION DENSITY MAP

If you want to show data distributon per geographical area, density maps (or heat maps) are a great way to achieve this. For example, here is a Illinois Population Density Map per County:

Illinois County Population Density Map

We have prepared this easily with Illinois County Heat Map Generator for population info. But it can also be used for many different data types such as employment rate, average temperature, racial distribution and so on.

We have prepared this easily with Illinois County Heat Map Generator for population info. But it can also be used for many different data types such as employment rate, average temperature, racial distribution and so on.

ILLINOIS COUNTIES LIST

Below are 102 Illinois counties ranked by population information. The data is from the US Census Bureau. Note that, these are ZCTA (Zip Code Tabulation Area) codes which means they have geographical area and population. PO Boxes and military codes are excluded.You can copy and paste this list directly into your spreadsheet.
(Top 10 counties shown. To expand the list, simply click on the “show more” button)

RankCountyPopulation
1Cook County5,150,233
2DuPage County922,921
3Lake County696,535
4Will County690,743
5Kane County532,403
6McHenry County307,774
7Winnebago County282,572
8Madison County262,966
9St. Clair County259,686
10Champaign County209,689
11Sangamon County194,672
12Peoria County179,179
13McLean County171,517
14Rock Island County141,879
15Tazewell County131,803
16Kendall County128,990
17Kankakee County109,862
18LaSalle County108,669
19DeKalb County104,897
20Macon County104,009
21Vermilion County75,758
22Williamson County66,597
23Adams County65,435
24Jackson County56,750
25Whiteside County55,175
26Boone County53,544
27Grundy County51,054
28Ogle County50,643
29Coles County50,621
30Knox County49,699
31Henry County48,913
32Macoupin County44,926
33Stephenson County44,498
34Franklin County38,469
35Woodford County38,459
36Jefferson County37,684
37Clinton County37,562
38Marion County37,205
39Livingston County35,648
40Monroe County34,637
41Fulton County34,340
42Lee County34,096
43Effingham County34,008
44Morgan County33,658
45Bureau County32,628
46Christian County32,304
47Randolph County31,782
48McDonough County29,682
49Logan County28,618
50Montgomery County28,414
51Iroquois County27,114
52Saline County23,491
53Jersey County21,773
54Shelby County21,634
55Fayette County21,336
56Jo Daviess County21,235
57Perry County20,916
58Douglas County19,465
59Crawford County18,667
60Hancock County17,708
61Edgar County17,161
62Warren County16,844
63Union County16,653
64Bond County16,426
65Piatt County16,344
66Wayne County16,215
67Lawrence County15,678
68De Witt County15,638
69Pike County15,561
70Richland County15,513
71Clark County15,441
72Mercer County15,437
73Moultrie County14,501
74Carroll County14,305
75Washington County13,887
76Massac County13,772
77White County13,537
78Mason County13,359
79Clay County13,184
80Greene County12,969
81Ford County12,961
82Johnson County12,417
83Menard County12,196
84Cass County12,147
85Wabash County11,520
86Marshall County11,438
87Cumberland County10,766
88Jasper County9,610
89Hamilton County8,116
90Schuyler County6,768
91Henderson County6,646
92Brown County6,578
93Edwards County6,395
94Alexander County5,761
95Putnam County5,739
96Stark County5,342
97Pulaski County5,335
98Scott County4,951
99Gallatin County4,828
100Calhoun County4,739
101Pope County4,177
102Hardin County3,821

FREQUENTLY ASKED QUESTIONS ABOUT ILLINOIS COUNTIES

What is the largest county in Illinois?

Out of the 102 counties in Illinois, Cook County is the largest by population. McLean County is the largest by land area.

What is the smallest county in Illinois?

Hardin County is the smallest Illinois county by population. Putnam County is the smallest by size.

What is the richest county in the state of Illinois?

In terms of economics and average income level, Lake County is the richest Illinois county.

What is the poorest county in Illinois?

Alexander County is the poorest Illinois county.

ILLINOIS COUNTIES MAP PDF

We have prepared Illinois county density map by population as a downloadable PDF.

Illinois County Population Density MapYou can download the PDF for free from the link below:

Illinois County Density Map PDF

VIDEO: HOW TO PAINT ILLINOIS COUNTY MAP WITH YOUR DATA

Check the video below to see how we use our Illinois County Map Excel Template to visualize any data over Illinois counties.

CREATE YOUR ILLINOIS DENSITY MAP IN 3 STEPS!

We have built the easiest Illinois Heat Map Maker in the universe! It works fully in Excel:

Someka Heat Map Maker Step 1 Tin 1. DATA INPUT

Copy-Paste or input your values into our Excel template

Someka Heat Map Maker Step 2 Tin 2. SET OPTIONS

Customize the settings according to your preferences

Someka Heat Map Maker Step 3 Tin 3. CREATE YOUR MAP

Click the PAINT button to reflect your data onto the map

LINKS AND RESOURCES

Here is a list of useful links which we think can be helpful whether you work on data visualization or make research about Illinois state and Illinois counties.

Data Source for Population and many other US related data:
https://www.census.gov

Wikipedia Page for List of Illinois Counties:
https://en.wikipedia.org/wiki/List_of_counties_in_Illinois

Official Website of the State of Illinois:
https://www2.illinois.gov/

Are you looking for Illinois Zip Code map?:
Illinois Zip Code Heat Map Generator in Excel

Are you looking for Illinois Counties map?:
Illinois Counties Heat Map Generator in Excel