State · FIPS 17
U.S. Census Bureau acs/acs5 vintage 2024 (2020–2024).
According to the U.S. Census Bureau American Community Survey 5-Year Estimates (vintage 2024, period 2020–2024, dataset acs/acs5), Illinois had a total population of 12,694,798 (B01003_001E). Median household income was $83,390 in 2024 inflation-adjusted dollars (B19013_001E).
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates, vintage 2024 (period 2020–2024). Dataset acs/acs5. Variables: B01003_001E (total population), B19013_001E (median household income, 2024 inflation-adjusted dollars). census.gov/data/developers. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
102 counties
| County | Population | Median household income |
|---|---|---|
| Adams County | 64,754 | $66,220 |
| Alexander County | 4,875 | $47,043 |
| Bond County | 16,716 | $65,959 |
| Boone County | 53,230 | $84,571 |
| Brown County | 6,322 | $67,917 |
| Bureau County | 32,866 | $69,257 |
| Calhoun County | 4,330 | $93,203 |
| Carroll County | 15,576 | $60,758 |
| Cass County | 12,784 | $68,125 |
| Champaign County | 208,741 | $63,683 |
| Christian County | 33,538 | $62,611 |
| Clark County | 15,266 | $72,927 |
| Clay County | 13,052 | $60,417 |
| Clinton County | 36,954 | $86,588 |
| Coles County | 46,777 | $56,478 |
| Cook County | 5,182,090 | $83,498 |
| Crawford County | 18,511 | $71,674 |
| Cumberland County | 10,334 | $73,327 |
| De Witt County | 15,373 | $71,678 |
| DeKalb County | 100,703 | $70,724 |
| Douglas County | 19,751 | $77,320 |
| DuPage County | 930,024 | $112,096 |
| Edgar County | 16,535 | $59,941 |
| Edwards County | 6,075 | $60,519 |
| Effingham County | 34,522 | $80,404 |
| Fayette County | 21,315 | $60,944 |
| Ford County | 13,406 | $62,439 |
| Franklin County | 37,323 | $56,740 |
| Fulton County | 33,020 | $60,599 |
| Gallatin County | 4,819 | $59,219 |
| Greene County | 11,683 | $62,192 |
| Grundy County | 53,219 | $92,235 |
| Hamilton County | 7,916 | $65,746 |
| Hancock County | 17,281 | $65,865 |
| Hardin County | 3,605 | $54,271 |
| Henderson County | 6,193 | $62,227 |
| Henry County | 48,643 | $71,911 |
| Iroquois County | 26,449 | $66,255 |
| Jackson County | 53,064 | $48,763 |
| Jasper County | 9,180 | $74,755 |
| Jefferson County | 36,550 | $63,118 |
| Jersey County | 21,274 | $80,361 |
| Jo Daviess County | 21,851 | $73,993 |
| Johnson County | 13,376 | $62,528 |
| Kane County | 517,255 | $103,163 |
| Kankakee County | 106,635 | $71,281 |
| Kendall County | 137,675 | $111,601 |
| Knox County | 49,046 | $57,030 |
| Lake County | 714,223 | $110,416 |
| LaSalle County | 108,714 | $73,045 |
| Lawrence County | 15,031 | $55,324 |
| Lee County | 33,869 | $70,292 |
| Livingston County | 35,565 | $73,790 |
| Logan County | 27,713 | $66,358 |
| Macon County | 101,849 | $62,666 |
| Macoupin County | 44,350 | $70,805 |
| Madison County | 264,238 | $75,793 |
| Marion County | 37,000 | $61,240 |
| Marshall County | 11,647 | $71,585 |
| Mason County | 12,745 | $62,845 |
| Massac County | 13,865 | $65,116 |
| McDonough County | 26,920 | $52,795 |
| McHenry County | 312,591 | $104,802 |
| McLean County | 171,556 | $79,905 |
| Menard County | 12,095 | $82,176 |
| Mercer County | 15,495 | $74,182 |
| Monroe County | 35,036 | $102,880 |
| Montgomery County | 27,942 | $63,620 |
| Morgan County | 33,021 | $66,306 |
| Moultrie County | 14,424 | $71,784 |
| Ogle County | 51,495 | $82,132 |
| Peoria County | 179,645 | $65,108 |
| Perry County | 20,639 | $62,118 |
| Piatt County | 16,695 | $94,811 |
| Pike County | 14,469 | $59,777 |
| Pope County | 3,739 | $60,050 |
| Pulaski County | 5,015 | $42,463 |
| Putnam County | 5,601 | $75,590 |
| Randolph County | 30,058 | $68,131 |
| Richland County | 15,598 | $62,455 |
| Rock Island County | 142,757 | $67,159 |
| Saline County | 23,213 | $53,117 |
| Sangamon County | 194,947 | $75,357 |
| Schuyler County | 6,787 | $65,948 |
| Scott County | 4,937 | $66,705 |
| Shelby County | 20,720 | $72,095 |
| St. Clair County | 253,694 | $73,854 |
| Stark County | 5,308 | $62,878 |
| Stephenson County | 43,768 | $64,043 |
| Tazewell County | 130,290 | $77,982 |
| Union County | 16,997 | $55,728 |
| Vermilion County | 72,386 | $56,877 |
| Wabash County | 11,119 | $57,086 |
| Warren County | 16,447 | $67,385 |
| Washington County | 13,627 | $78,224 |
| Wayne County | 15,973 | $55,521 |
| White County | 13,619 | $54,813 |
| Whiteside County | 54,947 | $67,500 |
| Will County | 701,462 | $109,984 |
| Williamson County | 66,876 | $65,604 |
| Winnebago County | 283,292 | $65,837 |
| Woodford County | 38,312 | $91,483 |