Youngest Cities in Illinois

The top 25 of 70 Illinois cities on GIS Map, ranked by lowest median age.

#	City	County	Median age	Population
1	Carbondale	Jackson	24.6 years	22,158
2	Normal	McLean	25 years	53,569
3	DeKalb	DeKalb	26.1 years	40,443
4	Urbana	Champaign	26.1 years	39,341
5	Champaign	Champaign	26.6 years	89,996
6	Champaign-Urbana	Champaign	26.6 years	89,996
7	Macomb	McDonough	27.6 years	14,894
8	Charleston	Coles	29.6 years	17,062
9	Edwardsville	Madison	31.8 years	26,474
10	Carpentersville	Kane	33.8 years	37,346
11	Cicero	Cook	34.4 years	82,797
12	Aurora	Kane/DuPage	35.2 years	179,898
13	Hanover Park	Cook/DuPage	35.3 years	36,732
14	Peoria	Peoria	35.5 years	112,169
15	Romeoville	Will	35.5 years	41,152
16	Waukegan	Lake	35.5 years	89,076
17	Chicago	Cook	35.8 years	2,711,226
18	Joliet	Will	35.8 years	150,445
19	Kankakee	Kankakee	36.1 years	23,996
20	Bloomington	McLean	36.2 years	78,907
21	Elgin	Kane	36.7 years	114,934
22	Lake in the Hills	McHenry	36.8 years	28,800
23	Wheaton	DuPage	36.8 years	53,557
24	Bolingbrook	Will	37.2 years	74,096
25	Plainfield	Will	37.5 years	46,708

Top Illinois Counties

Counties ranked by lowest median age.

1. Champaign County30.7 years 2. Jackson County32.4 years 3. DeKalb County32.7 years 4. McLean County34.3 years 5. McDonough County34.9 years 6. Kendall County36.3 years 7. Coles County37.5 years 8. Cook County38 years 9. Peoria County38.1 years 10. Cass County38.3 years

Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates. Only cities covered by GIS Map with at least 1,000 residents are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Youngest Cities in Illinois”, https://gismap.land/rankings/illinois/youngest-cities. Figures from U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Youngest Cities in Illinois

Top Illinois Counties

More Illinois rankings