From a total population of 53,879, Johnson County has a median age of 29.6. The average age of males, in Johnson County, is 28.6 while the average age of females is 30.7. When you compare this to median age of Missouri, Johnson County is 8.5 years younger.
The median income of individuals, in Johnson County, is $22,394 while the average household income is $49,978. When comparing the median income of people living in Johnson County to the rest of Missouri, the average income in Johnson County is $3,612 less.