Data / Rankings / Median age / Counties in Illinois

Counties in Illinois by median age, 2024

Pope County had the highest median age of 102 counties in 2024, at 53.9 years. Champaign County had the lowest, at 30.7 years. The median was 42.6 years and the figure for Illinois was 39 years. Source: the U.S. Census Bureau.

Highest53.9Pope County
Lowest30.7Champaign County
Median42.6102 counties
Illinois39History

Top 40 counties, 2024

CSVChart (SVG)

Pope CountyPope County: 53.9 years53.9Hardin CountyHardin County: 53.6 years53.6Jo Daviess CountyJo Daviess County: 51.5 years51.5Henderson CountyHenderson County: 50.2 years50.2Schuyler CountySchuyler County: 49.1 years49.1Calhoun CountyCalhoun County: 48.8 years48.8Alexander CountyAlexander County: 48 years48Putnam CountyPutnam County: 47.4 years47.4Hancock CountyHancock County: 46.9 years46.9Gallatin CountyGallatin County: 46.7 years46.7Edgar CountyEdgar County: 46.6 years46.6Marshall CountyMarshall County: 46.1 years46.1Scott CountyScott County: 46 years46Carroll CountyCarroll County: 45.4 years45.4Mason CountyMason County: 45.4 years45.4Shelby CountyShelby County: 45.3 years45.3Stephenson CountyStephenson County: 45.3 years45.3Edwards CountyEdwards County: 44.7 years44.7Massac CountyMassac County: 44.7 years44.7Mercer CountyMercer County: 44.7 years44.7Iroquois CountyIroquois County: 44.4 years44.4Stark CountyStark County: 44.4 years44.4Jasper CountyJasper County: 44.3 years44.3Union CountyUnion County: 44.3 years44.3White CountyWhite County: 44.3 years44.3Macoupin CountyMacoupin County: 44.2 years44.2Washington CountyWashington County: 44.2 years44.2Bureau CountyBureau County: 44.1 years44.1Fulton CountyFulton County: 43.9 years43.9Hamilton CountyHamilton County: 43.9 years43.9Saline CountySaline County: 43.8 years43.8De Witt CountyDe Witt County: 43.7 years43.7Jersey CountyJersey County: 43.7 years43.7Randolph CountyRandolph County: 43.7 years43.7Henry CountyHenry County: 43.6 years43.6Franklin CountyFranklin County: 43.4 years43.4Greene CountyGreene County: 43.4 years43.4Christian CountyChristian County: 43.2 years43.2Monroe CountyMonroe County: 43.2 years43.2Wabash CountyWabash County: 43.2 years43.2
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2024
years		Change on 2023
1Pope County53.9+3.1
2Hardin County53.6-1.4
3Jo Daviess County51.5+0.6
4Henderson County50.2+0.4
5Schuyler County49.1+0.3
6Calhoun County48.8+0.3
7Alexander County48+2.2
8Putnam County47.4+0.2
9Hancock County46.9+0.6
10Gallatin County46.7-0.6
11Edgar County46.6+0.2
12Marshall County46.1+0.2
13Scott County46+1.7
14Carroll County45.4+0.5
14Mason County45.4-0.1
16Shelby County45.3-0.2
16Stephenson County45.3+0.1
18Edwards County44.7+0.1
18Massac County44.7-0.3
18Mercer County44.7+0.2
21Iroquois County44.40
21Stark County44.4-0.2
23Jasper County44.3+0.1
23Union County44.30
23White County44.3-0.1
26Macoupin County44.2-0.1
26Washington County44.20
28Bureau County44.10
29Fulton County43.9+0.2
29Hamilton County43.9+0.4
31Saline County43.8+0.6
32De Witt County43.7-0.3
32Jersey County43.7+0.5
32Randolph County43.7+0.7
35Henry County43.6+0.2
36Franklin County43.40
36Greene County43.4+0.3
38Christian County43.2+0.5
38Monroe County43.2+0.7
38Wabash County43.2+0.2
41Cumberland County43.1+0.8
41Lee County43.1+0.1
43Pike County43+0.1
43Pulaski County43+0.3
43Whiteside County43-0.4
46Menard County42.80
46Montgomery County42.8+0.2
46Piatt County42.8+0.3
46Wayne County42.8-0.3
50Clark County42.6+0.6
50Crawford County42.6+0.2
50Knox County42.6+0.2
53Richland County42.3-0.2
54LaSalle County42.2+0.1
54Ogle County42.2+0.2
56Perry County42-0.2
57Fayette County41.9+0.2
57Ford County41.9-0.6
57Tazewell County41.9+0.2
60Livingston County41.8-0.1
61Williamson County41.6+0.2
62Clinton County41.5+0.1
62Marion County41.5+0.2
64Adams County41.4+0.3
64Johnson County41.4-1.3
66Vermilion County41.3+0.1
67Jefferson County41.2+0.1
68Logan County41.1+0.6
68Morgan County41.1-0.4
70Brown County41+0.1
70Sangamon County41+0.2
72Lawrence County40.7+0.1
72McHenry County40.7+0.3
74Macon County40.6-0.3
75Clay County40.4-1.1
75Woodford County40.4-0.1
77Rock Island County40.30
78DuPage County40.2+0.2
78Madison County40.20
80Moultrie County40.1-0.3
81Effingham County40+0.5
82St. Clair County39.9+0.4
83Bond County39.7-0.7
83Boone County39.7+0.2
85Winnebago County39.6-0.1
86Lake County39.1+0.2
86Will County39.1+0.2
88Kankakee County390
89Kane County38.8+0.2
90Douglas County38.7-0.2
91Warren County38.5-0.2
92Cass County38.3+0.2
92Grundy County38.3-0.3
94Peoria County38.10
95Cook County38+0.2
96Coles County37.5-0.7
97Kendall County36.3+0.3
98McDonough County34.9-0.2
99McLean County34.3+0.1
100DeKalb County32.7+0.1
101Jackson County32.4-0.5
102Champaign County30.7-0.2

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/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Pope County, with 53.9 years in 2024, according to the U.S. Census Bureau.

Which county has the lowest median age?

Champaign County, with 30.7 years in 2024.

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