US Census Data

Largest households in Illinois

Illinois counties and cities ranked by average household size.

This page ranks the counties and cities of Illinois by average household size — which have the largest average household size, according to the US Census Bureau's American Community Survey 5-year estimates.

Among counties, Calhoun County leads at 3.52.

Among cities & places, Serena leads at 13.93.

Counties

Top 100.
#NameAvg household size
1Calhoun County3.52
2Kendall County3.03
3Will County2.86
4Kane County2.79
5Johnson County2.78
6Boone County2.77
7Lake County2.70
8Alexander County2.69
9McHenry County2.66
10Pulaski County2.65
11Pope County2.63
12DuPage County2.62
13Fayette County2.59
14Greene County2.57
15Grundy County2.56
16Jersey County2.55
17Woodford County2.54
18Macoupin County2.51
19Monroe County2.51
20Kankakee County2.50
21Massac County2.50
22Douglas County2.49
23Lawrence County2.49
24Cass County2.47
25St. Clair County2.47
26Ogle County2.46
27Cook County2.45
28Cumberland County2.45
29Pike County2.45
30DeKalb County2.44
31Effingham County2.43
32Jasper County2.43
33Moultrie County2.43
34Piatt County2.42
35Winnebago County2.42
36Clinton County2.41
37Mercer County2.41
38Richland County2.40
39Henry County2.38
40Jefferson County2.38
41Christian County2.37
42Hardin County2.37
43Madison County2.37
44Tazewell County2.37
45Clay County2.36
46Marion County2.36
47Scott County2.36
48White County2.36
49Hamilton County2.35
50LaSalle County2.35
51McLean County2.35
52Shelby County2.35
53Washington County2.35
54Henderson County2.34
55Union County2.34
56Bond County2.33
57Lee County2.33
58Vermilion County2.33
59Whiteside County2.33
60Bureau County2.32
61Iroquois County2.32
62Menard County2.32
63Randolph County2.32
64Warren County2.32
65Wayne County2.32
66Crawford County2.31
67Gallatin County2.31
68Morgan County2.31
69Wabash County2.31
70Edwards County2.30
71Franklin County2.30
72Livingston County2.30
73Marshall County2.30
74Perry County2.30
75Adams County2.29
76Champaign County2.29
77De Witt County2.29
78Hancock County2.29
79Macon County2.29
80Montgomery County2.29
81Clark County2.28
82Saline County2.28
83Stark County2.28
84Ford County2.27
85Peoria County2.27
86Sangamon County2.27
87Putnam County2.26
88Rock Island County2.26
89Fulton County2.25
90Williamson County2.25
91Brown County2.23
92Carroll County2.22
93Stephenson County2.22
94Logan County2.21
95Mason County2.21
96Schuyler County2.20
97Knox County2.18
98Edgar County2.13
99Jackson County2.13
100Coles County2.12

Cities & places

Top 100.
#NameAvg household size
1Serena13.93
2Merritt6.82
3Kings6.57
4Shirley6.08
5El Dara5.00
6Custer Park4.90
7Kaskaskia4.86
8Rock Island Arsenal4.71
9Carman4.45
10Cypress4.33
11Paloma4.33
12Fidelity4.20
13Burton4.09
14Thebes3.95
15Burnt Prairie3.83
16West Brooklyn3.76
17Capron3.75
18Mound City3.74
19Stone Park3.74
20Simpson3.73
21Lane3.63
22Owaneco3.63
23Kampsville3.58
24Trilla3.58
25Buncombe3.55
26Lockport Heights3.55
27Garden Prairie3.54
28Candlewick Lake3.52
29Eagarville3.52
30Maeystown3.50
31East Cape Girardeau3.48
32Rockbridge3.48
33Unity3.48
34Kingston3.46
35Forest View3.45
36Plattville3.45
37West Point3.44
38Westervelt3.43
39Indian Creek3.42
40Wilmington3.42
41Bowen3.41
42Sun River Terrace3.41
43Ridgewood3.37
44West Chicago3.37
45Seymour3.36
46Ridgefield3.35
47Donovan3.34
48Pleasant Hill3.34
49Troy Grove3.32
50Nebo3.31
51Walshville3.31
52Lisbon3.30
53Cicero3.29
54Hanover Park3.29
55Timberlane3.29
56Hardin3.28
57Kenilworth3.28
58Arbury Hills3.27
59Grant Park3.26
60Posen3.26
61Sigel3.24
62Sunnyland3.24
63Willowbrook3.24
64Niantic3.23
65St. Francisville3.23
66Dixmoor3.22
67Carpentersville3.21
68Hampshire3.21
69Congerville3.20
70Hillview3.20
71Plainfield3.20
72Buckingham3.19
73Batchtown3.18
74Scott AFB3.18
75Alexander3.15
76Greenfield3.15
77Lily Lake3.15
78Round Lake Beach3.15
79Maywood3.14
80Spring Grove3.14
81Broughton3.13
82Channahon3.13
83Hillcrest3.13
84Lakewood3.13
85Royal Lakes3.12
86Greenwood3.11
87Round Lake Heights3.11
88Swedona3.11
89Manhattan3.10
90Bolingbrook3.09
91Braceville3.09
92Chesterfield3.09
93Davis Junction3.09
94Franklin Park3.09
95Minooka3.09
96Moro3.09
97Romeoville3.09
98Shipman3.09
99Calhoun3.08
100Dorchester3.08

Nationwide

1

Other rankings in Illinois

20

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