Marion County, Missouri Demographics 2026

Population Overview

Marion County is located in Missouri with a total population of 28,493. It is the 39th most populous county out of 115 in Missouri.

Age Demographics

The median age in Marion County is 39.4 years. This is 1% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Marion County is $63,908. This is 7% lower than the state median of $68,920. Compared to the national median of $78,538, household income here is 19% lower. The poverty rate stands at 13.6%. This is 8% higher than the state poverty rate of 12.6%. The unemployment rate is 3.5%. This is 15% lower than the state rate of 4.1%. The median home value is $158,100. Housing costs are 27% lower than the state median of $215,600. With a home-value-to-income ratio of just 2.5x, Marion County is one of the most affordable housing markets in the area. 69.8% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 67.9%.

Race & Ethnicity

Marion County has a predominantly White (non-Hispanic) population, comprising 89.4% of all residents. Black or African American residents account for 5.2%. The Black or African American population (5.2%) is well below the state average of 11.0%. The Hispanic or Latino population (2.0%) is well below the state average of 5.1%. The Asian population (0.3%) is well below the state average of 2.1%.

Education

25.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 19% 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 90.3%.