Data / Rankings / Population aged 65 and over / Counties in Illinois

Counties in Illinois by share of population aged 65 and over

Pope County had the highest share of population aged 65 and over of 102 counties in 2022, at 30.1%. Kendall County had the lowest, at 11.5%. The median was 21.8% and the figure for Illinois was 17.4%. Source: the U.S. Census Bureau.

Highest30.1Pope County
Lowest11.5Kendall County
Median21.8102 counties
Illinois17.4History

Top 40 counties, 2022

CSVChart (SVG)

Pope CountyPope County: 30.1 %30.1Hardin CountyHardin County: 29.9 %29.9Jo Daviess CountyJo Daviess County: 29.5 %29.5Henderson CountyHenderson County: 27.6 %27.6Calhoun CountyCalhoun County: 26.2 %26.2Alexander CountyAlexander County: 26.1 %26.1Gallatin CountyGallatin County: 25.9 %25.9Schuyler CountySchuyler County: 25.6 %25.6Hancock CountyHancock County: 25.2 %25.2Carroll CountyCarroll County: 24.8 %24.8Stephenson CountyStephenson County: 24.7 %24.7Marshall CountyMarshall County: 24.7 %24.7Edgar CountyEdgar County: 24.5 %24.5Putnam CountyPutnam County: 24.3 %24.3Shelby CountyShelby County: 24 %24Scott CountyScott County: 24 %24Pulaski CountyPulaski County: 24 %24White CountyWhite County: 24 %24Stark CountyStark County: 23.8 %23.8Union CountyUnion County: 23.7 %23.7Mason CountyMason County: 23.6 %23.6Bureau CountyBureau County: 23.3 %23.3Iroquois CountyIroquois County: 23.3 %23.3Wabash CountyWabash County: 23.2 %23.2Whiteside CountyWhiteside County: 23.1 %23.1Knox CountyKnox County: 23 %23Edwards CountyEdwards County: 22.9 %22.9Fulton CountyFulton County: 22.9 %22.9Macoupin CountyMacoupin County: 22.8 %22.8Mercer CountyMercer County: 22.8 %22.8Saline CountySaline County: 22.8 %22.8Washington CountyWashington County: 22.8 %22.8Pike CountyPike County: 22.6 %22.6Henry CountyHenry County: 22.6 %22.6Greene CountyGreene County: 22.5 %22.5Massac CountyMassac County: 22.4 %22.4Jersey CountyJersey County: 22.4 %22.4Hamilton CountyHamilton County: 22.4 %22.4Piatt CountyPiatt County: 22.3 %22.3Wayne CountyWayne County: 22.3 %22.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2022 (%)Change on 2021
1Pope County30.1+0.9 pts
2Hardin County29.9-0.1 pts
3Jo Daviess County29.5+0.6 pts
4Henderson County27.6+0.9 pts
5Calhoun County26.2+0.3 pts
6Alexander County26.1+0.9 pts
7Gallatin County25.9+0.1 pts
8Schuyler County25.6+0.6 pts
9Hancock County25.2+0.5 pts
10Carroll County24.8+0.3 pts
11Stephenson County24.7+0.4 pts
12Marshall County24.7+0.3 pts
13Edgar County24.5+0.5 pts
14Putnam County24.3+0.8 pts
15Shelby County24+0.2 pts
16Scott County24+0.4 pts
17Pulaski County24+0.5 pts
18White County24+0.1 pts
19Stark County23.8-0.1 pts
20Union County23.7+0.3 pts
21Mason County23.60 pts
22Bureau County23.3+0.4 pts
23Iroquois County23.3+0.3 pts
24Wabash County23.2+0.5 pts
25Whiteside County23.1+0.6 pts
26Knox County23+0.3 pts
27Edwards County22.90 pts
28Fulton County22.9+0.3 pts
29Macoupin County22.8+0.6 pts
30Mercer County22.8+0.3 pts
31Saline County22.8+0.4 pts
32Washington County22.8+0.5 pts
33Pike County22.6-0 pts
34Henry County22.6+0.6 pts
35Greene County22.5+0.6 pts
36Massac County22.4+0.3 pts
37Jersey County22.4+0.7 pts
38Hamilton County22.4+0.1 pts
39Piatt County22.3+0.7 pts
40Wayne County22.3+0.1 pts
41Franklin County22.3+0.2 pts
42Jasper County22.3+0.3 pts
43Cumberland County22.1+0.6 pts
44Richland County22.1+0.2 pts
45Clay County22+0.4 pts
46Montgomery County22+0.5 pts
47Moultrie County21.9+0.8 pts
48Clark County21.9+0.5 pts
49Marion County21.8+0.5 pts
50Crawford County21.80 pts
51Ford County21.8+0.3 pts
52Lawrence County21.7+2 pts
53Menard County21.6+0.4 pts
54Macon County21.6+0.4 pts
55Christian County21.5+0.3 pts
56Adams County21.4+0.4 pts
57Morgan County21.3+0.4 pts
58De Witt County21.3+0.5 pts
59Warren County21.3+0.3 pts
60Lee County21.2+0.8 pts
61Williamson County21.2+0.6 pts
62Randolph County21.1+0.6 pts
63Perry County21.1-0 pts
64Livingston County21+0.5 pts
65Vermilion County21+0.4 pts
66Rock Island County20.9+0.6 pts
67Logan County20.9+0.4 pts
68Jefferson County20.9+0.5 pts
69LaSalle County20.9+0.6 pts
70Tazewell County20.7+0.4 pts
71Woodford County20.6+0.5 pts
72Monroe County20.5+0.9 pts
73Johnson County20.5+0.3 pts
74McDonough County20.4+0.4 pts
75Effingham County20.1+0.4 pts
76Ogle County20.1+0.4 pts
77Sangamon County19.9+0.6 pts
78Coles County19.7+0.7 pts
79Bond County19.6+0.5 pts
80Fayette County19.6+0.3 pts
81Clinton County19.4+0.6 pts
82Douglas County19.4+0.2 pts
83Madison County19.1+0.6 pts
84Peoria County18.8+0.5 pts
85Kankakee County18.8+0.5 pts
86Winnebago County18.8+0.4 pts
87Cass County18.2+0.5 pts
88DuPage County17.8+0.6 pts
89Jackson County17.8+0.3 pts
90St. Clair County17.8+0.7 pts
91Boone County17.3+0.5 pts
92McHenry County16.8+0.6 pts
93Brown County16.2+0.3 pts
94Lake County16.2+0.6 pts
95Cook County16.1+0.5 pts
96Grundy County16+0.5 pts
97Kane County15.8+0.6 pts
98McLean County15.3+0.5 pts
99DeKalb County15.3+0.6 pts
100Will County15.1+0.5 pts
101Champaign County14.1+0.3 pts
102Kendall County11.5+0.2 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

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. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

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Rank Counties in Illinois by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"Illinois","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Illinois&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Pope County, with 30.1% in 2022, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Kendall County, with 11.5% 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, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in Illinois: more rankings