Johnson County's estimated 2026 population is 177,501 with a growth rate of 1.86% in the past year according to the most recent United States census data. Johnson County is the 10th largest county in Indiana. The 2010 population was 140,269 and has seen a growth of 26.54% since that time.
Data after 2023 is projected based on recent change
Overall: 38 years
Female: 39.1 years
Male: 36.9 years
There are 125,954 adults, (26,185 of whom are seniors) in Johnson County.
Female: 83,776 (50.4%)
Male: 82,539 (49.6%)
The racial composition of Johnson County includes 84.65% White, 5.14% Asian, 3.28% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 140,778 | 84.65% |
| Asian | 8,542 | 5.14% |
| Two or more races | 8,514 | 5.12% |
| Black or African American | 5,461 | 3.28% |
| Other race | 2,145 | 1.29% |
| Native American | 806 | 0.48% |
| Native Hawaiian or Pacific Islander | 69 | 0.04% |
Johnson County's average per capita income is $55,355. Household income levels show a median of $90,454. The poverty rate stands at 7.44%.
Name | Median | Mean |
|---|---|---|
| Married Families | $120,703 | $148,274 |
| Families | $107,145 | $133,286 |
| Households | $90,454 | $113,915 |
| Non Families | $47,893 | $63,738 |
Average Income
Median Household Income
Poverty Rate
