As of 2026 the population of Johnson County is 55,517. The population is expected to grow to 56,290 by 2031 - a growth rate of 0.28%.
The median age of Johnson County residents is 33.
The diversity index of Johnson County is 37.9, meaning that there is a 38% 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 $87,603 and projected to be $96,549 in 2031. Per capita income is $33,865, projected to be $37,618 in 2031. 1.78% of households – 987 – have an income of $200,000 or higher. Average net worth is $755,267 and the average disposable income is $67,659.
There are 23,385 housing units in Johnson County; 13,435 are owner-occupied, 7,815 are rented, and 2,135 are vacant. The average home value is $314,014, with 3,179 homes built in 2010 or later, and 1,948 built in 1939 or earlier.
There are 1,572 businesses in Johnson County, employing 20,548 workers and pulling from a labor force of 27,349 age 16 and above. 6,618 workers commute into Johnson County from outside the county or state. Key industries for the area include:
19,825 residents both live and work in/around Johnson County. The average travel time is 23.7 minutes. 8.12% people have a commute of less than 5 minutes while 2.63% commute 90 minutes or more each way. Of commuters, 21,633 drive alone, 2,337 carpool, and 54 take public transportation. 1,354 use other modes of transport such as motorcycle, bicycle, walking, etc. 1,901 residents work from home.
11,138 members of the workforce hold a high school diploma or GED. 4,752 have associates degrees, 6,554 have bachelor’s degrees, and 4,208 hold a graduate or professional degree.
Source: ESRI, 2026-09-09
