Johnson County, Missouri Demographics 2026

Population Overview

Johnson County is located in Missouri with a total population of 54,331. It is the 21st most populous county out of 115 in Missouri. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Johnson County is 31.3 years. This is 20% lower than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Johnson County is $67,123. This is 3% lower than the state median of $68,920. Compared to the national median of $78,538, household income here is 15% lower. The poverty rate stands at 11.9%. This is 6% lower than the state poverty rate of 12.6%. The unemployment rate is 4.9%. This is 19% higher than the state rate of 4.1%. The median home value is $221,400. Housing costs are 3% higher than the state median of $215,600. The home-value-to-income ratio is 3.3x. 63.9% of occupied housing units are owner-occupied. This homeownership rate is 6% lower than the state average of 67.9%.

Race & Ethnicity

The largest racial or ethnic group in Johnson County is White (non-Hispanic), making up 84.3% of the population. Hispanic or Latino residents account for 5.1%. The Black or African American population (3.7%) is well below the state average of 11.0%.

Education

29.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 9% lower than the state rate of 31.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.1%.