Richest & Poorest Counties in Illinois

Illinois has 102 counties. The wealthiest county by median household income is DuPage County at $112,096 , while the lowest-income county is Pulaski County at $42,463 . The statewide median household income is $83,390, compared to the national median of $75,149.

The income gap between the wealthiest and poorest county in Illinois is $69,633. 25 of 102 counties (25%) have a median household income above the national median of $75,149, while 77 (75%) fall below it.

Illinois's statewide median of $83,390 is 11.0% above the national median. Income data is sourced from the U.S. Census Bureau's American Community Survey (2024 5-Year Estimates) and reflects pre-tax household income including wages, investments, and government transfers.

Geography

Counties Zip Codes

Metric

Richest Counties in Illinois

Top 10 counties ranked by median household income.

# County Income
1 DuPage County $112,096 +49.2%
2 Kendall County $111,601 +48.5%
3 Lake County $110,416 +46.9%
4 Will County $109,984 +46.4%
5 McHenry County $104,802 +39.5%
6 Kane County $103,163 +37.3%
7 Monroe County $102,880 +36.9%
8 Piatt County $94,811 +26.2%
9 Calhoun County $93,203 +24.0%
10 Grundy County $92,235 +22.7%

Poorest Counties in Illinois

Bottom 10 counties ranked by median household income.

# County Income
102 Pulaski County $42,463 -43.5%
101 Alexander County $47,043 -37.4%
100 Jackson County $48,763 -35.1%
99 McDonough County $52,795 -29.7%
98 Saline County $53,117 -29.3%
97 Hardin County $54,271 -27.8%
96 White County $54,813 -27.1%
95 Lawrence County $55,324 -26.4%
94 Wayne County $55,521 -26.1%
93 Union County $55,728 -25.8%

All 102 Counties Ranked

Every county in Illinois ranked by median household income. Click any county for its full profile.

# County Income
1 DuPage County $112,096 +49.2%
2 Kendall County $111,601 +48.5%
3 Lake County $110,416 +46.9%
4 Will County $109,984 +46.4%
5 McHenry County $104,802 +39.5%
6 Kane County $103,163 +37.3%
7 Monroe County $102,880 +36.9%
8 Piatt County $94,811 +26.2%
9 Calhoun County $93,203 +24.0%
10 Grundy County $92,235 +22.7%
11 Woodford County $91,483 +21.7%
12 Clinton County $86,588 +15.2%
13 Boone County $84,571 +12.5%
14 Cook County $83,498 +11.1%
15 Menard County $82,176 +9.4%
16 Ogle County $82,132 +9.3%
17 Effingham County $80,404 +7.0%
18 Jersey County $80,361 +6.9%
19 McLean County $79,905 +6.3%
20 Washington County $78,224 +4.1%
21 Tazewell County $77,982 +3.8%
22 Douglas County $77,320 +2.9%
23 Madison County $75,793 +0.9%
24 Putnam County $75,590 +0.6%
25 Sangamon County $75,357 +0.3%
26 Jasper County $74,755 -0.5%
27 Mercer County $74,182 -1.3%
28 Jo Daviess County $73,993 -1.5%
29 St. Clair County $73,854 -1.7%
30 Livingston County $73,790 -1.8%
31 Cumberland County $73,327 -2.4%
32 LaSalle County $73,045 -2.8%
33 Clark County $72,927 -3.0%
34 Shelby County $72,095 -4.1%
35 Henry County $71,911 -4.3%
36 Moultrie County $71,784 -4.5%
37 De Witt County $71,678 -4.6%
38 Crawford County $71,674 -4.6%
39 Marshall County $71,585 -4.7%
40 Kankakee County $71,281 -5.1%
41 Macoupin County $70,805 -5.8%
42 DeKalb County $70,724 -5.9%
43 Lee County $70,292 -6.5%
44 Bureau County $69,257 -7.8%
45 Randolph County $68,131 -9.3%
46 Cass County $68,125 -9.3%
47 Brown County $67,917 -9.6%
48 Whiteside County $67,500 -10.2%
49 Warren County $67,385 -10.3%
50 Rock Island County $67,159 -10.6%
51 Scott County $66,705 -11.2%
52 Logan County $66,358 -11.7%
53 Morgan County $66,306 -11.8%
54 Iroquois County $66,255 -11.8%
55 Adams County $66,220 -11.9%
56 Bond County $65,959 -12.2%
57 Schuyler County $65,948 -12.2%
58 Hancock County $65,865 -12.4%
59 Winnebago County $65,837 -12.4%
60 Hamilton County $65,746 -12.5%
61 Williamson County $65,604 -12.7%
62 Massac County $65,116 -13.4%
63 Peoria County $65,108 -13.4%
64 Stephenson County $64,043 -14.8%
65 Champaign County $63,683 -15.3%
66 Montgomery County $63,620 -15.3%
67 Jefferson County $63,118 -16.0%
68 Stark County $62,878 -16.3%
69 Mason County $62,845 -16.4%
70 Macon County $62,666 -16.6%
71 Christian County $62,611 -16.7%
72 Johnson County $62,528 -16.8%
73 Richland County $62,455 -16.9%
74 Ford County $62,439 -16.9%
75 Henderson County $62,227 -17.2%
76 Greene County $62,192 -17.2%
77 Perry County $62,118 -17.3%
78 Marion County $61,240 -18.5%
79 Fayette County $60,944 -18.9%
80 Carroll County $60,758 -19.1%
81 Fulton County $60,599 -19.4%
82 Edwards County $60,519 -19.5%
83 Clay County $60,417 -19.6%
84 Pope County $60,050 -20.1%
85 Edgar County $59,941 -20.2%
86 Pike County $59,777 -20.5%
87 Gallatin County $59,219 -21.2%
88 Wabash County $57,086 -24.0%
89 Knox County $57,030 -24.1%
90 Vermilion County $56,877 -24.3%
91 Franklin County $56,740 -24.5%
92 Coles County $56,478 -24.8%
93 Union County $55,728 -25.8%
94 Wayne County $55,521 -26.1%
95 Lawrence County $55,324 -26.4%
96 White County $54,813 -27.1%
97 Hardin County $54,271 -27.8%
98 Saline County $53,117 -29.3%
99 McDonough County $52,795 -29.7%
100 Jackson County $48,763 -35.1%
101 Alexander County $47,043 -37.4%
102 Pulaski County $42,463 -43.5%

About This Data

All figures are estimates from the American Community Survey 2024 5-Year Estimates, published by the U.S. Census Bureau. Values are subject to sampling variability and margin of error.

Rankings are within Illinois only and may differ from national rankings. For more information, see our methodology.

Frequently Asked Questions

What is the richest county in Illinois?
The richest county in Illinois by median household income is DuPage County, with a median household income of $112,096 according to the 2024 American Community Survey. This is above the national median of $75,149.
What is the poorest county in Illinois?
The poorest county in Illinois by median household income is Pulaski County, at $42,463. This is $32,686 below the national median of $75,149.
How many counties are in Illinois?
Illinois has 102 counties with income data from the American Community Survey. 25 of these (25%) have a median household income above the national median of $75,149.
What is the median household income in Illinois?
The statewide median household income in Illinois is $83,390, which is 11.0% above the national median of $75,149.
Which county in Illinois has the highest home values?
DuPage County has the highest median home value in Illinois at $391,400.