Median household income in Illinois
At $80,593, the median household income in Illinois is 3% above the national figure of $78,067, ranking 17 of 52, with DuPage County the highest county at $107,035.
Household income is the base every other money decision sits on: what you can borrow, what you can save, what a house costs you in real terms.
| Rank | County | Typical figure | Context |
|---|---|---|---|
| 1 | DuPage County | $107,035 | 930,559 residents |
| 2 | Kendall County | $106,358 | 132,795 residents |
| 3 | Lake County | $104,553 | 713,159 residents |
| 4 | Will County | $103,678 | 696,774 residents |
| 5 | Monroe County | $100,685 | 34,905 residents |
| 6 | McHenry County | $100,101 | 311,133 residents |
| 7 | Kane County | $96,400 | 517,254 residents |
| 8 | Grundy County | $89,993 | 52,624 residents |
| 9 | Calhoun County | $88,059 | 4,472 residents |
| 10 | Menard County | $84,846 | 12,284 residents |
| 11 | Piatt County | $81,151 | 16,698 residents |
| 12 | Boone County | $80,502 | 53,459 residents |
| 13 | Woodford County | $80,093 | 38,414 residents |
| 14 | Cook County | $78,304 | 5,225,367 residents |
| 15 | Clinton County | $78,054 | 36,998 residents |
| 16 | Jersey County | $77,607 | 21,462 residents |
| 17 | Ogle County | $75,782 | 51,672 residents |
| 18 | Putnam County | $75,726 | 5,628 residents |
| 19 | McLean County | $75,356 | 171,284 residents |
| 20 | Washington County | $75,111 | 13,781 residents |
| 21 | Tazewell County | $74,606 | 131,276 residents |
| 22 | Effingham County | $73,181 | 34,594 residents |
| 23 | Moultrie County | $72,833 | 14,531 residents |
| 24 | Madison County | $71,759 | 265,512 residents |
| 25 | Sangamon County | $71,653 | 196,122 residents |
| 26 | Cumberland County | $71,274 | 10,447 residents |
| 27 | Scott County | $70,500 | 4,899 residents |
| 28 | St. Clair County | $68,915 | 256,791 residents |
| 29 | DeKalb County | $68,617 | 100,686 residents |
| 30 | Livingston County | $68,175 | 35,771 residents |
| 31 | LaSalle County | $67,942 | 109,495 residents |
| 32 | Jo Daviess County | $67,729 | 21,942 residents |
| 33 | Jasper County | $67,429 | 9,295 residents |
| 34 | Douglas County | $67,177 | 19,714 residents |
| 35 | Mercer County | $67,028 | 15,692 residents |
| 36 | Henry County | $66,313 | 49,157 residents |
| 37 | Clark County | $65,874 | 15,467 residents |
| 38 | Shelby County | $65,585 | 21,042 residents |
| 39 | Kankakee County | $65,489 | 107,421 residents |
| 40 | Henderson County | $64,946 | 6,374 residents |
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Methodology
Every figure on this page comes from the U.S. Census Bureau's American Community Survey 5-year estimates. We store one row per county and roll counties up to state level, weighting each county by its population so that large metros are not treated the same as very small counties.
The median household income shown for a state is that population-weighted figure, not a simple average of county values. National comparisons use the same method across all states, so the state-versus-U.S. gap you see is a like-for-like comparison.
These are survey estimates, not transaction records, and they describe typical households rather than any individual situation. Nothing here is personalised financial advice.
Sources: U.S. Census Bureau, American Community Survey (5-year). American Community Survey 5-year estimates, 2022.
Source: U.S. Census Bureau, American Community Survey (5-year).