Johnson County's estimated 2026 population is 57,516 with a growth rate of 1.49% in the past year according to the most recent United States census data. Johnson County is the 20th largest county in Missouri. The 2010 population was 52,689 and has seen a growth of 9.16% since that time.
Data after 2023 is projected based on recent change
Overall: 31.5 years
Female: 32.7 years
Male: 30.7 years
There are 42,624 adults, (7,196 of whom are seniors) in Johnson County.
Female: 26,764 (48.9%)
Male: 27,968 (51.1%)
The racial composition of Johnson County includes 85.34% White, 4.35% Black or African American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 46,706 | 85.34% |
| Two or more races | 3,731 | 6.82% |
| Black or African American | 2,380 | 4.35% |
| Asian | 830 | 1.52% |
| Other race | 741 | 1.35% |
| Native Hawaiian or Pacific Islander | 199 | 0.36% |
| Native American | 145 | 0.26% |
Johnson County's average per capita income is $46,476. Household income levels show a median of $67,272. The poverty rate stands at 11.81%.
Name | Median | Mean |
|---|---|---|
| Married Families | $94,849 | $110,855 |
| Families | $86,789 | $101,442 |
| Households | $67,272 | $83,022 |
| Non Families | $43,712 | $50,992 |
Average Income
Median Household Income
Poverty Rate