Johnson County, Illinois
Johnson County, Illinois, had an estimated population of 13,363 in 2025 across 890 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among Illinois's counties and nationally.
- Population
- 13,363
- 2025 estimate
- Area
- 890 km²
- Density
- 15
- per km²
- Median income
- $62,528
- household, ACS 2024
- Median age
- 41.4
- years, ACS 2024
How Illinois's counties spread
Amenities & Infrastructure
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| Households with Broadband2024 | 80.1% | 94 / 102 | 2,740 / 3,144 |
| Median Gross Rent2024 | $781 | 73 / 102 | 2,253 / 3,137 |
| Median Home Value2024 | $160,500 | 32 / 102 | 2,010 / 3,139 |
| Owner-Occupied Homes2024 | 82.0% | 13 / 102 | 362 / 3,144 |
| Vacant Homes2024 | 26.0% | 6 / 102 | 433 / 3,144 |
Demography
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| Aged 65 and Over2024 | 19.7% | 67 / 102 | 1,655 / 3,144 |
| American Indian & Alaska Native2024 | 0.0% | 62 / 102 | 2,461 / 3,144 |
| Asian, non-Hispanic2024 | 0.2% | 83 / 102 | 2,411 / 3,144 |
| Average Household Size2024people | 2.8 | 4 / 102 | 207 / 3,144 |
| Black, non-Hispanic2024 | 7.8% | 20 / 102 | 862 / 3,144 |
| Foreign-Born2024 | 1.2% | 64 / 102 | 2,513 / 3,144 |
| Hispanic or Latino2024 | 4.5% | 38 / 102 | 1,713 / 3,144 |
| Median Age2024years | 41.4 | 64 / 102 | 1,598 / 3,144 |
| Sex Ratio2024per 1,000 males | 744 | 101 / 102 | 3,070 / 3,144 |
| Speak a Language Other Than English2024 | 2.3% | 75 / 102 | 2,621 / 3,144 |
| Under 182024 | 18.6% | 91 / 102 | 2,622 / 3,144 |
| Veterans2024 | 8.1% | 31 / 102 | 1,007 / 3,144 |
| White, non-Hispanic2024 | 80.1% | 76 / 102 | 1,586 / 3,144 |
Economy
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| Below Poverty Line2024 | 17.6% | 10 / 102 | 743 / 3,144 |
| Households on SNAP2024 | 12.9% | 69 / 102 | 1,354 / 3,144 |
| Income Inequality2024index | 0.436 | 45 / 102 | 1,954 / 3,144 |
| Median Household Income2024 | $62,528 | 72 / 102 | 1,844 / 3,143 |
| Per Capita Income2024 | $27,765 | 100 / 102 | 2,726 / 3,144 |
| Unemployment Rate2024 | 3.5% | 78 / 102 | 2,148 / 3,144 |
Education
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| Bachelor's Degree or Higher2024 | 19.6% | 64 / 102 | 1,996 / 3,144 |
| High School or Higher2024 | 85.4% | 101 / 102 | 2,471 / 3,144 |
Health Coverage
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| No Health Insurance2024 | 8.1% | 7 / 102 | 1,492 / 3,144 |
| With a Disability2024 | 18.6% | 22 / 102 | 878 / 3,144 |
Population & Density
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| Population2025 | 13,363 | 77 / 102 | 2,198 / 3,144 |
| Population Density2025/km² | 15 | 58 / 102 | 1,673 / 3,144 |
Work & Commute
| Indicator | Value | In Illinois | In the US |
|---|---|---|---|
| Commute by Public Transit2024 | 0.0% | 87 / 102 | 2,161 / 3,144 |
| Households with No Vehicle2024 | 4.3% | 83 / 102 | 2,167 / 3,144 |
| Mean Commute Time2024minutes | 28.4 | 13 / 102 | 714 / 3,143 |
| Work from Home2024 | 4.8% | 89 / 102 | 2,674 / 3,144 |
Other counties of Illinois
- Adams County
- Alexander County
- Bond County
- Boone County
- Brown County
- Bureau County
- Calhoun County
- Carroll County
- Cass County
- Champaign County
- Christian County
- Clark County
- Clay County
- Clinton County
- Coles County
- Cook County
- Crawford County
- Cumberland County
- De Witt County
- DeKalb County
- Douglas County
- DuPage County
- Edgar County
- Edwards County
- Effingham County
- Fayette County
- Ford County
- Franklin County
- Fulton County
- Gallatin County
- Greene County
- Grundy County
- Hamilton County
- Hancock County
- Hardin County
- Henderson County
- Henry County
- Iroquois County
- Jackson County
- Jasper County
- Jefferson County
- Jersey County
- Jo Daviess County
- Kane County
- Kankakee County
- Kendall County
- Knox County
- LaSalle County
- Lake County
- Lawrence County
- Lee County
- Livingston County
- Logan County
- Macon County
- Macoupin County
- Madison County
- Marion County
- Marshall County
- Mason County
- Massac County
- McDonough County
- McHenry County
- McLean County
- Menard County
- Mercer County
- Monroe County
- Montgomery County
- Morgan County
- Moultrie County
- Ogle County
- Peoria County
- Perry County
- Piatt County
- Pike County
- Pope County
- Pulaski County
- Putnam County
- Randolph County
- Richland County
- Rock Island County
- Saline County
- Sangamon County
- Schuyler County
- Scott County
- Shelby County
- St. Clair County
- Stark County
- Stephenson County
- Tazewell County
- Union County
- Vermilion County
- Wabash County
- Warren County
- Washington County
- Wayne County
- White County
- Whiteside County
- Will County
- Williamson County
- Winnebago County
- Woodford County
Compare Johnson County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.