US Census Data

Most densely populated in Illinois

Illinois counties and cities ranked by population density.

This page ranks the counties and cities of Illinois by population density — which have the most people per square mile, according to the US Census Bureau's American Community Survey 5-year estimates.

Among counties, Cook County leads at 5,488/sq mi.

Among cities & places, Berwyn leads at 14,314/sq mi.

Counties

Top 100.
#NamePeople / sq mi
1Cook County5,488/sq mi
2DuPage County2,828/sq mi
3Lake County1,605/sq mi
4Kane County994/sq mi
5Will County836/sq mi
6Winnebago County552/sq mi
7McHenry County516/sq mi
8Kendall County422/sq mi
9St. Clair County387/sq mi
10Madison County370/sq mi
11Rock Island County334/sq mi
12Peoria County291/sq mi
13Sangamon County225/sq mi
14Champaign County207/sq mi
15Tazewell County202/sq mi
16Boone County190/sq mi
17Macon County177/sq mi
18Williamson County159/sq mi
19DeKalb County159/sq mi
20Kankakee County158/sq mi
21McLean County144/sq mi
22Grundy County127/sq mi
23LaSalle County96/sq mi
24Coles County92/sq mi
25Franklin County92/sq mi
26Monroe County91/sq mi
27Jackson County90/sq mi
28Vermilion County81/sq mi
29Whiteside County81/sq mi
30Stephenson County78/sq mi
31Clinton County78/sq mi
32Adams County76/sq mi
33Woodford County73/sq mi
34Effingham County72/sq mi
35Knox County69/sq mi
36Ogle County68/sq mi
37Marion County65/sq mi
38Jefferson County64/sq mi
39Saline County62/sq mi
40Henry County59/sq mi
41Massac County59/sq mi
42Jersey County58/sq mi
43Morgan County57/sq mi
44Randolph County52/sq mi
45Macoupin County52/sq mi
46Wabash County50/sq mi
47Christian County47/sq mi
48Douglas County47/sq mi
49Perry County47/sq mi
50Lee County47/sq mi
51McDonough County46/sq mi
52Logan County45/sq mi
53Bond County44/sq mi
54Richland County44/sq mi
55Moultrie County43/sq mi
56Crawford County42/sq mi
57Union County41/sq mi
58Lawrence County41/sq mi
59Montgomery County40/sq mi
60De Witt County39/sq mi
61Johnson County39/sq mi
62Menard County39/sq mi
63Fulton County38/sq mi
64Piatt County38/sq mi
65Bureau County38/sq mi
66Jo Daviess County36/sq mi
67Carroll County35/sq mi
68Putnam County35/sq mi
69Livingston County34/sq mi
70Cass County34/sq mi
71Clark County31/sq mi
72Warren County31/sq mi
73Marshall County30/sq mi
74Cumberland County30/sq mi
75Fayette County30/sq mi
76Clay County28/sq mi
77Mercer County28/sq mi
78White County28/sq mi
79Ford County28/sq mi
80Shelby County28/sq mi
81Edwards County28/sq mi
82Edgar County27/sq mi
83Pulaski County25/sq mi
84Washington County24/sq mi
85Iroquois County24/sq mi
86Mason County24/sq mi
87Wayne County22/sq mi
88Hancock County22/sq mi
89Greene County22/sq mi
90Alexander County21/sq mi
91Brown County21/sq mi
92Hardin County20/sq mi
93Scott County19/sq mi
94Jasper County19/sq mi
95Stark County18/sq mi
96Hamilton County18/sq mi
97Pike County18/sq mi
98Calhoun County17/sq mi
99Henderson County17/sq mi
100Schuyler County16/sq mi

Cities & places

Top 100.
#NamePeople / sq mi
1Berwyn14,314/sq mi
2Cicero14,190/sq mi
3Stone Park13,109/sq mi
4Elmwood Park12,567/sq mi
5Chicago11,889/sq mi
6Oak Park11,344/sq mi
7Harwood Heights10,731/sq mi
8Evanston9,840/sq mi
9Hometown8,862/sq mi
10Maywood8,528/sq mi
11Norridge8,396/sq mi
12Arbury Hills7,854/sq mi
13Bellwood7,661/sq mi
14Highwood7,283/sq mi
15Burbank6,894/sq mi
16Ridgewood6,811/sq mi
17Oak Lawn6,662/sq mi
18Skokie6,600/sq mi
19Park City6,595/sq mi
20La Grange6,337/sq mi
21Brookfield6,278/sq mi
22Boulder Hill6,260/sq mi
23Chicago Ridge6,238/sq mi
24Evergreen Park6,165/sq mi
25Calumet Park6,119/sq mi
26Glendale Heights6,093/sq mi
27La Grange Park5,925/sq mi
28Orland Hills5,904/sq mi
29Forest Park5,829/sq mi
30Blue Island5,752/sq mi
31Hanover Park5,738/sq mi
32Merrionette Park5,716/sq mi
33Lockport Heights5,705/sq mi
34Melrose Park5,631/sq mi
35Park Ridge5,537/sq mi
36Round Lake Beach5,367/sq mi
37Mount Prospect5,191/sq mi
38Niles5,175/sq mi
39Hickory Hills5,174/sq mi
40Summit5,143/sq mi
41Forest Lake5,141/sq mi
42Wilmette5,100/sq mi
43Streamwood5,002/sq mi
44Midlothian4,974/sq mi
45Calumet City4,897/sq mi
46Lincolnwood4,896/sq mi
47Morton Grove4,852/sq mi
48Westmont4,809/sq mi
49Western Springs4,795/sq mi
50Clarendon Hills4,774/sq mi
51Carpentersville4,774/sq mi
52Villa Park4,756/sq mi
53Wheaton4,722/sq mi
54Palatine4,714/sq mi
55Lyons4,707/sq mi
56River Forest4,633/sq mi
57Dolton4,590/sq mi
58Riverside4,589/sq mi
59Arlington Heights4,588/sq mi
60Posen4,560/sq mi
61North Riverside4,560/sq mi
62Worth4,530/sq mi
63Round Lake Heights4,488/sq mi
64Westchester4,483/sq mi
65Buffalo Grove4,476/sq mi
66Oak Forest4,456/sq mi
67Elmhurst4,456/sq mi
68Broadview4,445/sq mi
69Wheeling4,439/sq mi
70Bonnie Brae4,425/sq mi
71River Grove4,384/sq mi
72Justice4,357/sq mi
73Carol Stream4,311/sq mi
74Lombard4,298/sq mi
75Indian Head Park4,282/sq mi
76Palos Hills4,272/sq mi
77Rolling Meadows4,269/sq mi
78Park Forest4,212/sq mi
79Kenilworth4,186/sq mi
80Sunnyland4,174/sq mi
81Des Plaines4,172/sq mi
82Schiller Park4,136/sq mi
83Jerome4,135/sq mi
84Roselle4,100/sq mi
85Bridgeview4,057/sq mi
86Glen Ellyn4,056/sq mi
87Aurora3,992/sq mi
88Hazel Crest3,971/sq mi
89Schaumburg3,961/sq mi
90Northlake3,951/sq mi
91Frankfort Square3,917/sq mi
92Champaign3,857/sq mi
93North Chicago3,849/sq mi
94Franklin Park3,817/sq mi
95Lansing3,807/sq mi
96Naperville3,797/sq mi
97Round Lake Park3,789/sq mi
98Homewood3,733/sq mi
99Prospect Heights3,727/sq mi
100Berkeley3,726/sq mi

Nationwide

1

Other rankings in Illinois

20

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