# Counties in Illinois by share of population aged 65 and over, 2025

All 102 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_65_plus_share`
- Unit: %
- Definition: 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.
- Source: 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
- Citation: 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.
- Web page: https://invokely.ai/rankings/population-65-plus/illinois-counties
- CSV: https://invokely.ai/download/rankings/population-65-plus/illinois-counties.csv

| Rank | Place | % |
|---:|---|---:|
| 1 | Pope County | 31.9 |
| 2 | Jo Daviess County | 31.5 |
| 3 | Hardin County | 31.2 |
| 4 | Henderson County | 29.5 |
| 5 | Schuyler County | 28.6 |
| 6 | Alexander County | 28.5 |
| 7 | Calhoun County | 28 |
| 8 | Gallatin County | 27.3 |
| 9 | Hancock County | 27 |
| 10 | Putnam County | 26.6 |
| 11 | Carroll County | 26.4 |
| 12 | Scott County | 26.4 |
| 13 | Stephenson County | 26 |
| 14 | Marshall County | 25.9 |
| 15 | Edgar County | 25.6 |
| 16 | Shelby County | 25.3 |
| 17 | Mason County | 25.1 |
| 18 | White County | 25 |
| 19 | Pulaski County | 25 |
| 20 | Bureau County | 24.9 |
| 21 | Iroquois County | 24.9 |
| 22 | Edwards County | 24.8 |
| 23 | Washington County | 24.7 |
| 24 | Union County | 24.4 |
| 25 | Wabash County | 24.3 |
| 26 | Jersey County | 24.2 |
| 27 | Whiteside County | 24.2 |
| 28 | Macoupin County | 24.2 |
| 29 | Massac County | 24.2 |
| 30 | Henry County | 24.1 |
| 31 | Saline County | 24 |
| 32 | Mercer County | 23.9 |
| 33 | Knox County | 23.9 |
| 34 | Cumberland County | 23.7 |
| 35 | Piatt County | 23.7 |
| 36 | Hamilton County | 23.7 |
| 37 | Fulton County | 23.7 |
| 38 | Clay County | 23.5 |
| 39 | Montgomery County | 23.4 |
| 40 | Stark County | 23.4 |
| 41 | Jasper County | 23.4 |
| 42 | Franklin County | 23.3 |
| 43 | Greene County | 23.3 |
| 44 | Pike County | 23.3 |
| 45 | Lee County | 23.3 |
| 46 | Richland County | 23.2 |
| 47 | Marion County | 23.2 |
| 48 | Menard County | 23.1 |
| 49 | Clark County | 23.1 |
| 49 | Wayne County | 23.1 |
| 51 | Christian County | 23 |
| 52 | Monroe County | 22.9 |
| 53 | Morgan County | 22.9 |
| 54 | Moultrie County | 22.8 |
| 55 | Adams County | 22.8 |
| 56 | Macon County | 22.7 |
| 57 | LaSalle County | 22.7 |
| 58 | Livingston County | 22.7 |
| 59 | Ford County | 22.7 |
| 60 | Perry County | 22.6 |
| 61 | De Witt County | 22.5 |
| 62 | Crawford County | 22.5 |
| 63 | Randolph County | 22.5 |
| 64 | Williamson County | 22.4 |
| 65 | Warren County | 22.4 |
| 66 | Jefferson County | 22.1 |
| 67 | Woodford County | 22.1 |
| 68 | Johnson County | 22.1 |
| 69 | Vermilion County | 22 |
| 70 | Logan County | 21.8 |
| 71 | Rock Island County | 21.8 |
| 72 | Effingham County | 21.7 |
| 73 | Tazewell County | 21.7 |
| 74 | McDonough County | 21.7 |
| 75 | Ogle County | 21.5 |
| 76 | Lawrence County | 21.5 |
| 77 | Sangamon County | 21.4 |
| 78 | Clinton County | 21.1 |
| 79 | Coles County | 21 |
| 80 | Bond County | 20.6 |
| 81 | Madison County | 20.6 |
| 82 | Fayette County | 20.6 |
| 83 | Douglas County | 20.4 |
| 84 | Kankakee County | 20.3 |
| 85 | Winnebago County | 19.9 |
| 86 | Peoria County | 19.7 |
| 87 | St. Clair County | 19.5 |
| 88 | DuPage County | 19.4 |
| 89 | McHenry County | 18.9 |
| 90 | Cass County | 18.8 |
| 91 | Jackson County | 18.7 |
| 92 | Boone County | 18.7 |
| 93 | Brown County | 18.1 |
| 94 | Lake County | 17.9 |
| 95 | Kane County | 17.3 |
| 96 | Cook County | 17.3 |
| 97 | Grundy County | 17.3 |
| 98 | McLean County | 16.8 |
| 99 | Will County | 16.7 |
| 100 | DeKalb County | 16.6 |
| 101 | Champaign County | 15.1 |
| 102 | Kendall County | 12.5 |