Data / Rankings / Households / Counties in Illinois

Counties in Illinois by households

Cook County had the highest households of 102 counties in 2022, at 2.07 million. Calhoun County had the lowest, at 1,205. The median was 10,633 and the figure for Illinois was 4.97 million. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest2,066,248Cook County
Lowest1,205Calhoun County
Median10,633102 counties
Illinois4,968,761History

Map of counties, 2022

Adams County: 27,490 countAlexander County: 1,727 countBond County: 6,220 countBoone County: 19,024 countBrown County: 2,066 countBureau County: 13,901 countCalhoun County: 1,205 countCarroll County: 6,317 countCass County: 5,004 countChampaign County: 82,467 countChristian County: 13,473 countClark County: 6,447 countClay County: 5,477 countClinton County: 14,493 countColes County: 20,385 countCook County: 2,066,248 countCrawford County: 7,481 countCumberland County: 4,142 countDeKalb County: 39,139 countDe Witt County: 6,644 countDouglas County: 7,640 countDuPage County: 348,870 countEdgar County: 7,598 countEdwards County: 2,625 countEffingham County: 14,098 countFayette County: 7,678 countFord County: 5,689 countFranklin County: 16,095 countFulton County: 13,955 countGallatin County: 2,155 countGreene County: 4,543 countGrundy County: 20,376 countHamilton County: 3,271 countHancock County: 7,510 countHardin County: 1,480 countHenderson County: 2,745 countHenry County: 20,187 countIroquois County: 11,217 countJackson County: 23,133 countJasper County: 3,710 countJefferson County: 14,778 countJersey County: 7,735 countJo Daviess County: 10,074 countJohnson County: 4,106 countKane County: 182,319 countKankakee County: 40,591 countKendall County: 43,878 countKnox County: 20,734 countLake County: 254,794 countLaSalle County: 45,130 countLawrence County: 5,426 countLee County: 13,669 countLivingston County: 14,665 countLogan County: 11,101 countMcDonough County: 11,600 countMcHenry County: 115,467 countMcLean County: 68,491 countMacon County: 43,362 countMacoupin County: 17,567 countMadison County: 108,914 countMarion County: 15,236 countMarshall County: 4,967 countMason County: 5,788 countMassac County: 5,413 countMenard County: 5,085 countMercer County: 6,435 countMonroe County: 13,565 countMontgomery County: 11,259 countMorgan County: 13,293 countMoultrie County: 5,824 countOgle County: 20,807 countPeoria County: 76,414 countPerry County: 8,147 countPiatt County: 6,783 countPike County: 5,734 countPope County: 1,349 countPulaski County: 1,886 countPutnam County: 2,400 countRandolph County: 11,650 countRichland County: 6,485 countRock Island County: 61,014 countSt. Clair County: 100,701 countSaline County: 10,165 countSangamon County: 84,017 countSchuyler County: 2,725 countScott County: 1,952 countShelby County: 8,762 countStark County: 2,326 countStephenson County: 19,337 countTazewell County: 53,676 countUnion County: 6,763 countVermilion County: 29,904 countWabash County: 4,778 countWarren County: 6,836 countWashington County: 5,747 countWayne County: 6,848 countWhite County: 5,676 countWhiteside County: 23,164 countWill County: 239,064 countWilliamson County: 28,521 countWinnebago County: 115,214 countWoodford County: 14,725 count
  • Under 10K
  • 10K to 20K
  • 20K to 40K
  • 40K and over
count, 2022. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

Cook County: 2,066,248 countCook County2,066,248DuPage County: 348,870 countDuPage County348,870Lake County: 254,794 countLake County254,794Will County: 239,064 countWill County239,064Kane County: 182,319 countKane County182,319McHenry County: 115,467 countMcHenry County115,467Winnebago County: 115,214 countWinnebago County115,214Madison County: 108,914 countMadison County108,914St. Clair County: 100,701 countSt. Clair County100,701Sangamon County: 84,017 countSangamon County84,017Champaign County: 82,467 countChampaign County82,467Peoria County: 76,414 countPeoria County76,414McLean County: 68,491 countMcLean County68,491Rock Island County: 61,014 countRock Island County61,014Tazewell County: 53,676 countTazewell County53,676LaSalle County: 45,130 countLaSalle County45,130Kendall County: 43,878 countKendall County43,878Macon County: 43,362 countMacon County43,362Kankakee County: 40,591 countKankakee County40,591DeKalb County: 39,139 countDeKalb County39,139Vermilion County: 29,904 countVermilion County29,904Williamson County: 28,521 countWilliamson County28,521Adams County: 27,490 countAdams County27,490Whiteside County: 23,164 countWhiteside County23,164Jackson County: 23,133 countJackson County23,133Ogle County: 20,807 countOgle County20,807Knox County: 20,734 countKnox County20,734Coles County: 20,385 countColes County20,385Grundy County: 20,376 countGrundy County20,376Henry County: 20,187 countHenry County20,187Stephenson County: 19,337 countStephenson County19,337Boone County: 19,024 countBoone County19,024Macoupin County: 17,567 countMacoupin County17,567Franklin County: 16,095 countFranklin County16,095Marion County: 15,236 countMarion County15,236Jefferson County: 14,778 countJefferson County14,778Woodford County: 14,725 countWoodford County14,725Livingston County: 14,665 countLivingston County14,665Clinton County: 14,493 countClinton County14,493Effingham County: 14,098 countEffingham County14,098Cook County: 2,066,248 countCook County2,066,248DuPage County: 348,870 countDuPage County348,870Lake County: 254,794 countLake County254,794Will County: 239,064 countWill County239,064Kane County: 182,319 countKane County182,319McHenry County: 115,467 countMcHenry County115,467Winnebago County: 115,214 countWinnebago County115,214Madison County: 108,914 countMadison County108,914St. Clair County: 100,701 countSt. Clair County100,701Sangamon County: 84,017 countSangamon County84,017Champaign County: 82,467 countChampaign County82,467Peoria County: 76,414 countPeoria County76,414McLean County: 68,491 countMcLean County68,491Rock Island County: 61,014 countRock Island County61,014Tazewell County: 53,676 countTazewell County53,676LaSalle County: 45,130 countLaSalle County45,130Kendall County: 43,878 countKendall County43,878Macon County: 43,362 countMacon County43,362Kankakee County: 40,591 countKankakee County40,591DeKalb County: 39,139 countDeKalb County39,139Vermilion County: 29,904 countVermilion County29,904Williamson County: 28,521 countWilliamson County28,521Adams County: 27,490 countAdams County27,490Whiteside County: 23,164 countWhiteside County23,164Jackson County: 23,133 countJackson County23,133Ogle County: 20,807 countOgle County20,807Knox County: 20,734 countKnox County20,734Coles County: 20,385 countColes County20,385Grundy County: 20,376 countGrundy County20,376Henry County: 20,187 countHenry County20,187Stephenson County: 19,337 countStephenson County19,337Boone County: 19,024 countBoone County19,024Macoupin County: 17,567 countMacoupin County17,567Franklin County: 16,095 countFranklin County16,095Marion County: 15,236 countMarion County15,236Jefferson County: 14,778 countJefferson County14,778Woodford County: 14,725 countWoodford County14,725Livingston County: 14,665 countLivingston County14,665Clinton County: 14,493 countClinton County14,493Effingham County: 14,098 countEffingham County14,098
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Full ranking

RankCounties2022
count		Change on 2021
1Cook County2,066,248+1.1%
2DuPage County348,870+0.4%
3Lake County254,794+0.8%
4Will County239,064+0.9%
5Kane County182,319+0.6%
6McHenry County115,467+0.9%
7Winnebago County115,214-0%
8Madison County108,914+0.6%
9St. Clair County100,701+0.6%
10Sangamon County84,017-0.7%
11Champaign County82,467+0.8%
12Peoria County76,414+1.4%
13McLean County68,491+0.9%
14Rock Island County61,014+0.5%
15Tazewell County53,676-0.1%
16LaSalle County45,130+0.6%
17Kendall County43,878+1.5%
18Macon County43,362+0.2%
19Kankakee County40,591+0.6%
20DeKalb County39,139+0.5%
21Vermilion County29,904+0.5%
22Williamson County28,521+1.7%
23Adams County27,490+1.2%
24Whiteside County23,164-0.1%
25Jackson County23,133-0.2%
26Ogle County20,807+0.2%
27Knox County20,734+0.8%
28Coles County20,385+0.6%
29Grundy County20,376+1.1%
30Henry County20,187+0.4%
31Stephenson County19,337+0.4%
32Boone County19,024+0.7%
33Macoupin County17,567-0.5%
34Franklin County16,095-0.9%
35Marion County15,236-0.4%
36Jefferson County14,778+1.2%
37Woodford County14,725+0.3%
38Livingston County14,665+1.6%
39Clinton County14,493+1.7%
40Effingham County14,098-0%
41Fulton County13,955+0.4%
42Bureau County13,901+0.8%
43Lee County13,669+1.2%
44Monroe County13,565+0.6%
45Christian County13,473-0.7%
46Morgan County13,293+0.8%
47Randolph County11,650+1%
48McDonough County11,600+3.1%
49Montgomery County11,259+1%
50Iroquois County11,217-0.2%
51Logan County11,101+0.9%
52Saline County10,165+1.4%
53Jo Daviess County10,074+0.7%
54Shelby County8,762-0.1%
55Perry County8,147+0.5%
56Jersey County7,735-1.1%
57Fayette County7,678+0.9%
58Douglas County7,640+0.7%
59Edgar County7,598+0.7%
60Hancock County7,510+1.9%
61Crawford County7,481-0.4%
62Wayne County6,848+0.8%
63Warren County6,836+0.3%
64Piatt County6,783+1.5%
65Union County6,763+0.9%
66De Witt County6,644+0.1%
67Richland County6,485+1.6%
68Clark County6,447+1.1%
69Mercer County6,435+1.5%
70Carroll County6,317+0.3%
71Bond County6,220+2.1%
72Moultrie County5,824+1.2%
73Mason County5,788-0%
74Washington County5,747-1.1%
75Pike County5,734-0.4%
76Ford County5,689-0.5%
77White County5,676-0.2%
78Clay County5,477+0.6%
79Lawrence County5,426-0.4%
80Massac County5,413-1%
81Menard County5,085-0.6%
82Cass County5,004+0.4%
83Marshall County4,967+1.5%
84Wabash County4,778+1%
85Greene County4,543+0.7%
86Cumberland County4,142+0.4%
87Johnson County4,106+1.3%
88Jasper County3,710-0.9%
89Hamilton County3,271+2.5%
90Henderson County2,745+1.8%
91Schuyler County2,725+1.2%
92Edwards County2,625-1.2%
93Putnam County2,400+4.4%
94Stark County2,326+2.8%
95Gallatin County2,155+1%
96Brown County2,066+3.4%
97Scott County1,952+0.5%
98Pulaski County1,886+1.6%
99Alexander County1,727-3%
100Hardin County1,480-1.4%
101Pope County1,349-1.7%
102Calhoun County1,205-5.3%

Other periods

About this ranking

Number of households, which equals the number of occupied housing units. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

People living in group quarters, such as college dormitories, nursing homes and prisons, are not in households.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25003: occupied housing units (households) (Counties in Illinois by households, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat

MLA 9

American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Illinois by households, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat. Invokely, https://invokely.ai/rankings/households/illinois-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25003: occupied housing units (households). Counties in Illinois by households, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/illinois-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Illinois by households, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat, via Invokely: https://invokely.ai/rankings/households/illinois-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Illinois by households, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/households/illinois-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Illinois by households, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat
L2  - https://invokely.ai/rankings/households/illinois-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/households/illinois-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b25003.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest households?

Cook County, with 2.07 million in 2022, according to the U.S. Census Bureau.

Which county has the lowest households?

Calhoun County, with 1,205 in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Households: other rankings

Counties in Illinois: more rankings