Cities in Illinois by average household size

West Chicago, IL had the highest average household size of 225 cities in 2023, at 3.4 persons per household. Carbondale, IL had the lowest, at 1.9 persons per household. The median was 2.6 persons per household and the figure for Illinois was 2.5 persons per household. Source: the U.S. Census Bureau.

Highest3.4West Chicago, IL

Lowest1.9Carbondale, IL

Median2.6225 cities

Illinois2.5History

Top 40 cities, 2023

persons per household. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.

Full ranking

Rank	Cities	2023 persons per household	Change on 2022
1	West Chicago, IL	3.4	-1.5%
2	Cicero, IL	3.3	-2.9%
2	Hanover Park, IL	3.3	-1.8%
4	Carpentersville, IL	3.2	-2.1%
5	Plainfield, IL	3.2	-0.3%
6	Round Lake Beach, IL	3.2	-4%
7	Maywood, IL	3.1	+3.6%
8	Channahon, IL	3.1	-1.6%
9	Manhattan, IL	3.1	+3.3%
10	Bolingbrook, IL	3.1	+1%
10	Franklin Park, IL	3.1	-2.2%
10	Minooka, IL	3.1	+1.3%
10	Romeoville, IL	3.1	-4%
14	Frankfort, IL	3.1	+0.7%
15	Homer Glen, IL	3	-0.3%
15	Pingree Grove, IL	3	+1.7%
17	Campton Hills, IL	3	-1.3%
17	Markham, IL	3	-2.9%
19	Country Club Hills, IL	3	+1.7%
19	Mahomet, IL	3	-1%
19	Plano, IL	3	+3.4%
19	Summit, IL	3	-2%
23	Bellwood, IL	3	-1.3%
23	Montgomery, IL	3	-4.2%
23	New Lenox, IL	3	-0.7%
26	Hinsdale, IL	3	+1.7%
26	Streamwood, IL	3	+0.3%
26	Western Springs, IL	3	-0.3%
29	Burbank, IL	3	-3%
29	Round Lake, IL	3	-3%
31	Aurora, IL	3	-0.7%
32	Beach Park, IL	2.9	-1.3%
32	Melrose Park, IL	2.9	-5.2%
32	Oswego, IL	2.9	+2.8%
32	Winnetka, IL	2.9	-1.3%
36	Lake in the Hills, IL	2.9	-0.3%
37	Joliet, IL	2.9	-2%
38	Elgin, IL	2.9	-1%
39	Glendale Heights, IL	2.9	-2%
40	Hazel Crest, IL	2.9	-2.1%
41	Antioch, IL	2.8	+0.4%
41	Chicago Heights, IL	2.8	-2.1%
41	Lincolnwood, IL	2.8	+0.7%
44	Bartlett, IL	2.8	-0.7%
45	Cary, IL	2.8	+0.7%
45	South Elgin, IL	2.8	-2.1%
47	Lindenhurst, IL	2.8	-0.4%
48	Yorkville, IL	2.8	-1.4%
49	Waukegan, IL	2.8	-1.1%
50	Shorewood, IL	2.8	-2.8%
51	Berwyn, IL	2.8	-2.8%
51	Mokena, IL	2.8	+1.1%
53	Algonquin, IL	2.7	+0.4%
53	Harvey, IL	2.7	0%
53	Hoffman Estates, IL	2.7	-2.1%
53	Lemont, IL	2.7	-1.1%
53	Skokie, IL	2.7	-0.7%
53	South Holland, IL	2.7	+0.7%
59	Carol Stream, IL	2.7	+0.4%
59	Northlake, IL	2.7	+0.7%
61	Homewood, IL	2.7	-0.7%
61	Mundelein, IL	2.7	0%
61	Wauconda, IL	2.7	-1.8%
64	Naperville, IL	2.7	-0.7%
64	Riverdale, IL	2.7	-1.8%
66	Addison, IL	2.7	-0.7%
66	Blue Island, IL	2.7	+1.5%
66	La Grange, IL	2.7	-0.7%
66	Lockport, IL	2.7	-1.5%
66	Schiller Park, IL	2.7	+0.4%
71	Bensenville, IL	2.7	0%
71	Cahokia Heights, IL	2.7	-4.6%
71	Crystal Lake, IL	2.7	-0.7%
71	Morton Grove, IL	2.7	-0.4%
75	Roscoe, IL	2.7	-2.9%
75	Zion, IL	2.7	-3.2%
77	Villa Park, IL	2.7	-2.9%
77	Wilmette, IL	2.7	+0.4%
77	Wood Dale, IL	2.7	-1.5%
80	Lake Zurich, IL	2.7	-2.2%
80	North Chicago, IL	2.7	+1.5%
82	Buffalo Grove, IL	2.7	-2.2%
82	Machesney Park, IL	2.7	+0.8%
84	Evergreen Park, IL	2.6	+0.8%
84	Libertyville, IL	2.6	0%
84	Roselle, IL	2.6	+0.4%
87	Chatham, IL	2.6	-1.5%
87	Elmhurst, IL	2.6	-1.1%
87	Elmwood Park, IL	2.6	+2.3%
87	Lake Forest, IL	2.6	-0.4%
91	Dolton, IL	2.6	+0.8%
91	Hickory Hills, IL	2.6	-5.8%
91	Oak Lawn, IL	2.6	+0.4%
91	Rolling Meadows, IL	2.6	+0.8%
95	Bourbonnais, IL	2.6	-3%
95	Bridgeview, IL	2.6	-3%
95	Glen Ellyn, IL	2.6	+1.2%
95	Gurnee, IL	2.6	0%
99	Chicago Ridge, IL	2.6	-1.9%
99	Geneva, IL	2.6	-1.1%
99	Grayslake, IL	2.6	+0.8%
99	Oak Forest, IL	2.6	-3%
99	Washington, IL	2.6	-0.8%
104	Barrington, IL	2.6	-0.4%
104	Des Plaines, IL	2.6	0%
104	Niles, IL	2.6	-0.4%
104	O'Fallon, IL	2.6	-2.6%
104	Swansea, IL	2.6	-1.1%
104	Warrenville, IL	2.6	+2%
104	Woodridge, IL	2.6	-0.8%
111	Batavia, IL	2.6	-4.1%
111	Deerfield, IL	2.6	-1.2%
111	Justice, IL	2.6	-7.6%
111	La Grange Park, IL	2.6	+1.6%
111	Norridge, IL	2.6	+1.6%
111	North Aurora, IL	2.6	+0.4%
117	Troy, IL	2.6	-0.4%
118	Northbrook, IL	2.6	+0.4%
118	Park Ridge, IL	2.6	0%
118	River Grove, IL	2.6	-7.3%
121	Highland Park, IL	2.5	+2.8%
122	Belvidere, IL	2.5	-2.3%
122	Glenview, IL	2.5	-0.8%
122	Lansing, IL	2.5	-1.2%
125	Mount Prospect, IL	2.5	-1.6%
125	Wheaton, IL	2.5	-0.8%
127	Lyons, IL	2.5	-4.9%
127	Palos Heights, IL	2.5	+0.4%
129	Brookfield, IL	2.5	+0.8%
130	Bradley, IL	2.5	-2.4%
130	Elk Grove Village, IL	2.5	-2%
130	Prospect Heights, IL	2.5	-0.8%
130	Tinley Park, IL	2.5	-2%
130	Winfield, IL	2.5	-1.6%
135	Lombard, IL	2.5	-1.6%
135	Matteson, IL	2.5	-0.4%
135	Park Forest, IL	2.5	-3.5%
135	Vernon Hills, IL	2.5	-3.9%
135	Wheeling, IL	2.5	+0.4%
140	Darien, IL	2.5	+0.4%
140	Kankakee, IL	2.5	-1.2%
140	Palatine, IL	2.5	-2%
140	River Forest, IL	2.5	+1.2%
140	Waterloo, IL	2.5	-1.2%
145	Columbia, IL	2.5	-2.4%
145	Edwardsville, IL	2.5	-2.8%
145	Orland Park, IL	2.5	-2.4%
145	St. Charles, IL	2.5	+0.8%
145	Worth, IL	2.5	-1.2%
150	Palos Hills, IL	2.5	-0.4%
150	Shiloh, IL	2.5	-0.8%
150	Woodstock, IL	2.5	-0.8%
153	East St. Louis, IL	2.4	+0.4%
154	Downers Grove, IL	2.4	-1.2%
154	Ottawa, IL	2.4	+0.8%
154	Rantoul, IL	2.4	+3%
157	Arlington Heights, IL	2.4	+0.4%
157	Bloomingdale, IL	2.4	0%
157	Burr Ridge, IL	2.4	-2.4%
157	Richton Park, IL	2.4	-2.8%
157	Sycamore, IL	2.4	-0.8%
162	Calumet City, IL	2.4	-3.2%
163	Alsip, IL	2.4	-2.4%
163	East Moline, IL	2.4	+1.7%
163	Midlothian, IL	2.4	-2.4%
163	Schaumburg, IL	2.4	-0.8%
167	Glen Carbon, IL	2.4	-2.1%
167	McHenry, IL	2.4	-2.1%
167	Morton, IL	2.4	+2.6%
170	Normal, IL	2.3	-1.3%
170	Rockford, IL	2.3	-0.8%
172	Granite City, IL	2.3	-1.3%
173	Chicago, IL	2.3	-1.7%
174	Loves Park, IL	2.3	-1.7%
174	Moline, IL	2.3	0%
174	Westchester, IL	2.3	0%
177	Alton, IL	2.3	0%
178	Fairview Heights, IL	2.3	-1.7%
178	Godfrey, IL	2.3	-1.3%
178	Huntley, IL	2.3	+0.4%
178	Wood River, IL	2.3	-1.7%
182	DeKalb, IL	2.3	-0.9%
182	Effingham, IL	2.3	-1.3%
184	Belleville, IL	2.3	-1.7%
184	Danville, IL	2.3	-2.6%
184	Oak Park, IL	2.3	-0.9%
187	Lisle, IL	2.3	0%
187	Mount Vernon, IL	2.3	-2.2%
189	Crest Hill, IL	2.3	+0.9%
189	Jacksonville, IL	2.3	+2.7%
189	Taylorville, IL	2.3	-3%
189	Westmont, IL	2.3	-2.6%
193	Bloomington, IL	2.2	-1.3%
194	East Peoria, IL	2.2	-3%
194	Kewanee, IL	2.2	-3.9%
196	Champaign, IL	2.2	-3.5%
196	Morris, IL	2.2	-1.8%
196	Pekin, IL	2.2	-0.9%
199	Evanston, IL	2.2	-2.6%
199	Herrin, IL	2.2	-0.5%
199	Peoria, IL	2.2	-1.8%
202	Centralia, IL	2.2	-3.5%
203	Decatur, IL	2.2	-1.4%
204	Springfield, IL	2.2	-0.9%
205	Collinsville, IL	2.2	-0.9%
205	Dixon, IL	2.2	+1.4%
205	Quincy, IL	2.2	-1.4%
208	Rock Island, IL	2.2	-4.9%
208	Sterling, IL	2.2	-2.7%
210	Streator, IL	2.1	+3.4%
211	Fox Lake, IL	2.1	+1.9%
211	Highland, IL	2.1	0%
213	Canton, IL	2.1	-1.9%
213	Pontiac, IL	2.1	-1.9%
215	Freeport, IL	2.1	-2.3%
215	Lincoln, IL	2.1	+0.5%
217	Galesburg, IL	2.1	0%
218	Marion, IL	2.1	0%
219	Mattoon, IL	2	-2.4%
220	Crestwood, IL	2	-3.9%
220	Urbana, IL	2	-1%
222	Forest Park, IL	2	+2.6%
222	Macomb, IL	2	-3.9%
224	Charleston, IL	1.9	-2%
225	Carbondale, IL	1.9	-0.5%

Other periods

2024
2023
2022
2021

About this ranking

Average number of persons per private household. EU countries: EU-SILC. United States: American Community Survey five-year estimate of people in households divided by occupied housing units, where the period shown is the last year of the five-year span.

Covers private households only; people living in institutions or other group quarters are excluded. EU-SILC figures refer to the survey year. The EU and US surveys differ, so their figures are not strictly comparable.

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

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.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 B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more) (Cities in Illinois by average household size, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat

MLA 9

American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more), Cities in Illinois by average household size, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat. Invokely, https://invokely.ai/rankings/average-household-size/illinois-cities?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more). Cities in Illinois by average household size, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat. Also distributed by Invokely, https://invokely.ai/rankings/average-household-size/illinois-cities?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more), Cities in Illinois by average household size, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat, via Invokely: https://invokely.ai/rankings/average-household-size/illinois-cities?period=2023 (Accessed: 12 October 2026).

BibTeX

@misc{census_cities_in_illinois_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more): Cities in Illinois by average household size, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/average-household-size/illinois-cities?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more): Cities in Illinois by average household size, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat
L2  - https://invokely.ai/rankings/average-household-size/illinois-cities?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-household-size/illinois-cities?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25010.dat. Retrieved 2026-10-12.
ER  -

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Questions

Which city has the highest average household size?

West Chicago, IL, with 3.4 persons per household in 2023, according to the U.S. Census Bureau.

Which city has the lowest average household size?

Carbondale, IL, with 1.9 persons per household in 2023.

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 B25010: average household size of occupied housing units, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.