As of 2025 the population of Johnson County is 54,678. The population is expected to grow to 55,077 by 2030 - a growth rate of 0.15%.
The median age of Johnson County residents is 33.
The diversity index of Johnson County is 36.8, meaning that there is a 37% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
The average household income in Johnson County is $87,592 and projected to be $95,688 in 2030. Per capita income is $33,827, projected to be $37,400 in 2030. 1.69% of households – 924 – have an income of $200,000 or higher. Average net worth is $676,889 and the average disposable income is $67,218.
There are 23,224 housing units in Johnson County; 13,427 are owner-occupied, 7,574 are rented, and 2,223 are vacant. The average home value is $307,433, with 2,730 homes built in 2010 or later, and 2,027 built in 1939 or earlier.
There are 1,565 businesses in Johnson County, employing 21,598 workers and pulling from a labor force of 26,874 age 16 and above. 6,862 workers commute into Johnson County from outside the county or state. Key industries for the area include:
19,201 residents both live and work in/around Johnson County. The average travel time is 23.8 minutes. 8.06% people have a commute of less than 5 minutes while 2.64% commute 90 minutes or more each way. Of commuters, 21,303 drive alone, 2,469 carpool, and 74 take public transportation. 1,253 use other modes of transport such as motorcycle, bicycle, walking, etc. 1,705 residents work from home.
10,981 members of the workforce hold a high school diploma or GED. 4,269 have associates degrees, 6,402 have bachelor’s degrees, and 4,352 hold a graduate or professional degree.
