Data / Rankings / Median age / Counties in Illinois

Counties in Illinois by median age

Hardin County had the highest median age of 102 counties in 2022, at 53.9 years. Champaign County had the lowest, at 30.8 years. The median was 42.2 years and the figure for Illinois was 38.7 years. Source: the U.S. Census Bureau.

Highest53.9Hardin County
Lowest30.8Champaign County
Median42.2102 counties
Illinois38.7History

Top 40 counties, 2022

CSVChart (SVG)

Hardin CountyHardin County: 53.9 years53.9Jo Daviess CountyJo Daviess County: 50.8 years50.8Pope CountyPope County: 49.7 years49.7Henderson CountyHenderson County: 49.6 years49.6Schuyler CountySchuyler County: 48.2 years48.2Calhoun CountyCalhoun County: 48.1 years48.1Putnam CountyPutnam County: 47.4 years47.4Gallatin CountyGallatin County: 46.9 years46.9Marshall CountyMarshall County: 46.2 years46.2Edgar CountyEdgar County: 46 years46Hancock CountyHancock County: 45.9 years45.9Stephenson CountyStephenson County: 45.6 years45.6Mason CountyMason County: 45.4 years45.4Carroll CountyCarroll County: 45 years45Alexander CountyAlexander County: 44.9 years44.9Shelby CountyShelby County: 44.9 years44.9Stark CountyStark County: 44.8 years44.8Mercer CountyMercer County: 44.7 years44.7Scott CountyScott County: 44.7 years44.7Union CountyUnion County: 44.7 years44.7White CountyWhite County: 44.7 years44.7Iroquois CountyIroquois County: 44.5 years44.5Edwards CountyEdwards County: 44.2 years44.2Massac CountyMassac County: 44.1 years44.1Bureau CountyBureau County: 44 years44De Witt CountyDe Witt County: 44 years44Jasper CountyJasper County: 44 years44Macoupin CountyMacoupin County: 44 years44Washington CountyWashington County: 44 years44Pulaski CountyPulaski County: 43.9 years43.9Wabash CountyWabash County: 43.8 years43.8Fulton CountyFulton County: 43.6 years43.6Henry CountyHenry County: 43.5 years43.5Whiteside CountyWhiteside County: 43.5 years43.5Franklin CountyFranklin County: 43.2 years43.2Saline CountySaline County: 43.2 years43.2Hamilton CountyHamilton County: 43 years43Randolph CountyRandolph County: 43 years43Wayne CountyWayne County: 42.9 years42.9Jersey CountyJersey County: 42.8 years42.8
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
years		Change on 2021
1Hardin County53.9+0.6
2Jo Daviess County50.8+0.3
3Pope County49.7-0.1
4Henderson County49.6-0.5
5Schuyler County48.2+0.4
6Calhoun County48.1-0.2
7Putnam County47.4+0.5
8Gallatin County46.9+0.2
9Marshall County46.2-0.3
10Edgar County46+0.3
11Hancock County45.9+0.1
12Stephenson County45.60
13Mason County45.4+0.2
14Carroll County45-2.3
15Alexander County44.9-0.6
15Shelby County44.9-0.1
17Stark County44.8-0.5
18Mercer County44.7+0.1
18Scott County44.7+0.1
18Union County44.7+0.9
18White County44.7+0.6
22Iroquois County44.5+0.3
23Edwards County44.2-0.1
24Massac County44.1+0.4
25Bureau County44+0.1
25De Witt County44-0.2
25Jasper County44-0.1
25Macoupin County44+0.3
25Washington County44-0.2
30Pulaski County43.9-0.3
31Wabash County43.8-0.2
32Fulton County43.60
33Henry County43.50
33Whiteside County43.5-0.1
35Franklin County43.20
35Saline County43.2+1.5
37Hamilton County43-0.9
37Randolph County43+1.1
39Wayne County42.9-0.3
40Jersey County42.8-0.2
40Lee County42.80
40Menard County42.8-0.6
40Pike County42.8+1.7
44Greene County42.7+0.7
44Montgomery County42.7-0.1
46Cumberland County42.6+0.1
47Monroe County42.5+0.2
48Johnson County42.3-1.1
48Knox County42.3+0.5
48Ogle County42.30
51Christian County42.2-0.4
51Crawford County42.20
51Perry County42.2+0.7
51Richland County42.2-0.1
55Fayette County42.10
56Ford County42-0.6
57LaSalle County41.9+0.1
57Livingston County41.9+0.3
57Marion County41.9-0.2
60Clay County41.8-0.3
60Piatt County41.8-0.1
62Tazewell County41.6+0.2
63Clark County41.4-0.4
63Morgan County41.4+0.5
65Adams County41.3+0.1
66Jefferson County41.20
66Williamson County41.2+0.1
68Clinton County41-0.2
69Lawrence County40.9+0.1
70Vermilion County40.8+0.2
71Macon County40.7-0.1
72Sangamon County40.6+0.1
73McHenry County40.5+0.1
73Moultrie County40.50
75Logan County40.3+0.4
76Rock Island County40.2+0.1
77Warren County40.1+0.5
77Woodford County40.1+0.1
79Bond County40-1.5
80DuPage County39.9+0.2
80Madison County39.9-0.3
82Winnebago County39.5-0.1
83St. Clair County39.4+0.2
84Effingham County39.3+0.1
85Boone County39+0.2
86Kankakee County38.9+0.4
87Cass County38.8+0.5
87Grundy County38.8+0.5
89Lake County38.7+0.2
89Will County38.7+0.4
91Douglas County38.6+0.2
92Brown County38.5+0.4
93Kane County38.3+0.3
94Peoria County38.1+0.3
95Cook County37.5+0.2
96Coles County37.4+0.8
97Kendall County36.1+0.3
98McDonough County34.9+1.2
99McLean County34+0.4
100Jackson County32.6+0.2
101DeKalb County31.8+0.4
102Champaign County30.8+0.2

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b01002.dat. Retrieved 2026-10-08.

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Rank Counties in Illinois by median age using official data, and cite the source.
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Questions

Which county has the highest median age?

Hardin County, with 53.9 years in 2022, according to the U.S. Census Bureau.

Which county has the lowest median age?

Champaign County, with 30.8 years in 2022.

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 B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Illinois: more rankings