US Census Data

Youngest by median age in Illinois

Illinois counties and cities ranked by median age.

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

Among counties, Champaign County leads at 30.9 yrs.

Among cities & places, Lane leads at 10.9 yrs.

Counties

Top 100.
#NameMedian age
1Champaign County30.9 yrs
2DeKalb County32.6 yrs
3Jackson County32.9 yrs
4McLean County34.2 yrs
5McDonough County35.1 yrs
6Kendall County36.0 yrs
7Cook County37.8 yrs
8Cass County38.1 yrs
9Peoria County38.1 yrs
10Coles County38.2 yrs
11Grundy County38.6 yrs
12Kane County38.6 yrs
13Warren County38.7 yrs
14Douglas County38.9 yrs
15Lake County38.9 yrs
16Will County38.9 yrs
17Kankakee County39.0 yrs
18Boone County39.5 yrs
19Effingham County39.5 yrs
20St. Clair County39.5 yrs
21Winnebago County39.7 yrs
22DuPage County40.0 yrs
23Madison County40.2 yrs
24Rock Island County40.3 yrs
25Bond County40.4 yrs
26McHenry County40.4 yrs
27Moultrie County40.4 yrs
28Logan County40.5 yrs
29Woodford County40.5 yrs
30Lawrence County40.6 yrs
31Sangamon County40.8 yrs
32Brown County40.9 yrs
33Macon County40.9 yrs
34Adams County41.1 yrs
35Jefferson County41.1 yrs
36Vermilion County41.2 yrs
37Marion County41.3 yrs
38Clinton County41.4 yrs
39Williamson County41.4 yrs
40Clay County41.5 yrs
41Morgan County41.5 yrs
42Fayette County41.7 yrs
43Tazewell County41.7 yrs
44Livingston County41.9 yrs
45Clark County42.0 yrs
46Ogle County42.0 yrs
47LaSalle County42.1 yrs
48Perry County42.2 yrs
49Cumberland County42.3 yrs
50Crawford County42.4 yrs
51Knox County42.4 yrs
52Ford County42.5 yrs
53Monroe County42.5 yrs
54Piatt County42.5 yrs
55Richland County42.5 yrs
56Montgomery County42.6 yrs
57Christian County42.7 yrs
58Johnson County42.7 yrs
59Pulaski County42.7 yrs
60Menard County42.8 yrs
61Pike County42.9 yrs
62Lee County43.0 yrs
63Randolph County43.0 yrs
64Wabash County43.0 yrs
65Greene County43.1 yrs
66Wayne County43.1 yrs
67Jersey County43.2 yrs
68Saline County43.2 yrs
69Franklin County43.4 yrs
70Henry County43.4 yrs
71Whiteside County43.4 yrs
72Hamilton County43.5 yrs
73Fulton County43.7 yrs
74De Witt County44.0 yrs
75Bureau County44.1 yrs
76Jasper County44.2 yrs
77Washington County44.2 yrs
78Macoupin County44.3 yrs
79Scott County44.3 yrs
80Union County44.3 yrs
81Iroquois County44.4 yrs
82White County44.4 yrs
83Mercer County44.5 yrs
84Edwards County44.6 yrs
85Stark County44.6 yrs
86Carroll County44.9 yrs
87Massac County45.0 yrs
88Stephenson County45.2 yrs
89Mason County45.5 yrs
90Shelby County45.5 yrs
91Alexander County45.8 yrs
92Marshall County45.9 yrs
93Hancock County46.3 yrs
94Edgar County46.4 yrs
95Putnam County47.2 yrs
96Gallatin County47.3 yrs
97Calhoun County48.5 yrs
98Schuyler County48.8 yrs
99Henderson County49.8 yrs
100Pope County50.8 yrs

Cities & places

Top 100.
#NameMedian age
1Lane10.9 yrs
2Kings13.5 yrs
3Serena15.4 yrs
4Westervelt15.4 yrs
5Kaskaskia15.9 yrs
6Merritt16.0 yrs
7Elsah20.6 yrs
8Paloma20.6 yrs
9New Salem23.5 yrs
10North Chicago23.6 yrs
11Mound Station23.9 yrs
12White Heath24.0 yrs
13Grand Tower24.1 yrs
14Eagarville24.7 yrs
15Carbondale24.9 yrs
16Normal25.2 yrs
17DeKalb25.4 yrs
18Elwin25.8 yrs
19West York25.9 yrs
20Buncombe26.2 yrs
21Scott AFB26.2 yrs
22Trilla26.5 yrs
23Henderson26.6 yrs
24Lorenzo26.6 yrs
25Tovey26.6 yrs
26Urbana26.7 yrs
27Phillipstown27.0 yrs
28Champaign27.1 yrs
29Lockport Heights27.1 yrs
30Cowden27.3 yrs
31Congerville27.4 yrs
32Willow Hill27.6 yrs
33Dixmoor27.7 yrs
34Macomb27.7 yrs
35Shirley27.7 yrs
36Kinderhook27.9 yrs
37Mount Erie27.9 yrs
38Burnt Prairie28.0 yrs
39Elliott28.0 yrs
40Little York28.2 yrs
41Joppa28.4 yrs
42La Clede28.5 yrs
43Ste. Marie28.5 yrs
44Bowen28.8 yrs
45Charleston28.8 yrs
46Bulpitt28.9 yrs
47Custer Park29.0 yrs
48El Dara29.0 yrs
49Industry29.0 yrs
50Brooklyn29.1 yrs
51Ludlow29.1 yrs
52Capron29.2 yrs
53Seymour29.3 yrs
54Thebes29.3 yrs
55Edgington29.5 yrs
56Loami29.5 yrs
57Rockdale29.6 yrs
58Round Lake Heights29.6 yrs
59Davis Junction29.8 yrs
60Old Ripley29.8 yrs
61Hartsburg30.0 yrs
62Hoyleton30.0 yrs
63Smithboro30.0 yrs
64Pleasant Hill30.1 yrs
65Troy Grove30.1 yrs
66West Brooklyn30.2 yrs
67Lerna30.3 yrs
68Creston30.4 yrs
69Harvard30.5 yrs
70Lisbon30.5 yrs
71Braceville30.7 yrs
72Percy30.7 yrs
73Stone Park30.7 yrs
74Jeisyville30.8 yrs
75Shipman30.8 yrs
76Symerton30.8 yrs
77Wilmington30.8 yrs
78Dieterich30.9 yrs
79Bannockburn31.0 yrs
80Calhoun31.1 yrs
81Addieville31.3 yrs
82Fairmont31.3 yrs
83Maeystown31.4 yrs
84McCook31.4 yrs
85Ashley31.5 yrs
86Kingston31.5 yrs
87Sigel31.5 yrs
88Campus31.6 yrs
89Chesterfield31.6 yrs
90Essex31.6 yrs
91Park City31.6 yrs
92Ridgewood31.6 yrs
93Shumway31.6 yrs
94Beardstown31.7 yrs
95Lawrence31.7 yrs
96Niantic31.7 yrs
97Astoria31.8 yrs
98Aviston31.8 yrs
99Coleta31.9 yrs
100Cortland31.9 yrs

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