| County | Median Household Income |
| Kendall |  $83,835 |
| Lake | $79,085 |
| DuPage | $78,538 |
| McHenry | $77,325 |
| Will | $76,352 |
| Monroe | $71,033 |
| Kane | $68,674 |
| Woodford | $68,552 |
| Grundy | $63,840 |
| Boone | $63,670 |
| Piatt | $62,125 |
| McLean | $61,049 |
| Clinton | $60,661 |
| Menard | $59,428 |
| Ogle | $55,590 |
| Tazewell | $55,580 |
| Sangamon | $55,355 |
| Cook | $54,648 |
| Putnam | $54,467 |
| Washington | $54,407 |
| Livingston | $54,339 |
| Jersey | $53,692 |
| DeKalb | $53,575 |
| Madison | $52,756 |
| Mercer | $52,700 |
| Marshall | $52,565 |
| La Salle | $52,356 |
| Henry | $52,284 |
| Jo Daviess | $52,164 |
| Stark | $51,392 |
| Effingham | $51,009 |
| Peoria | $50,925 |
| Douglas | $50,589 |
| St. Clair | $50,490 |
| Lee | $50,342 |
| Ford | $50,203 |
| Moultrie | $50,005 |
| Kankakee | $49,994 |
| Scott | $49,746 |
| De Witt | $49,626 |
| Henderson | $49,612 |
| Macoupin | $48,788 |
| Jasper | $48,703 |
| Carroll | $48,456 |
| Randolph | $48,383 |
| Rock Island | $48,205 |
| Bureau | $48,102 |
| Iroquois | $47,908 |
| Bond | $47,705 |
| Winnebago | $47,573 |
| Calhoun | $47,399 |
| Clark | $47,176 |
| Schuyler | $46,934 |
| Morgan | $46,763 |
| Logan | $46,647 |
| Shelby | $46,546 |
| Whiteside | $46,193 |
| Macon | $46,165 |
| Adams | $45,691 |
| Champaign | $45,088 |
| Wabash | $45,011 |
| Crawford | $44,617 |
| Stephenson | $44,572 |
| Cumberland | $44,430 |
| Christian | $44,211 |
| Brown | $43,915 |
| Fayette | $43,724 |
| Fulton | $43,363 |
| Richland | $43,240 |
| Cass | $43,180 |
| White | $43,151 |
| Edgar | $42,730 |
| Greene | $42,556 |
| Hancock | $42,494 |
| Mason | $42,394 |
| Jefferson | $42,272 |
| Montgomery | $42,261 |
| Massac | $42,190 |
| Johnson | $42,027 |
| Perry | $42,013 |
| Union | $41,869 |
| Marion | $41,723 |
| Williamson | $41,596 |
| Wayne | $41,446 |
| Warren | $41,138 |
| Vermilion | $40,961 |
| Pike | $40,445 |
| Knox | $40,419 |
| Clay | $39,966 |
| Pope | $39,854 |
| Lawrence | $39,324 |
| Edwards | $39,238 |
| Gallatin | $38,934 |
| Coles | $38,088 |
| Hamilton | $37,904 |
| Franklin | $37,158 |
| Saline | $37,139 |
| McDonough | $35,812 |
| Hardin | $35,632 |
| Jackson | $32,819 |
| Pulaski | $31,795 |
| Alexander | $27,248 |
US-Places.com
Illinois Income by County -
Median Household income
The graph below ranks each Illinois County by Median Household income according to the 2012 census estimates.
See Also:
Illinois Average Income by County