Sullivan County, Missouri Demographics 2026

Population Overview

Sullivan County is located in Missouri with a total population of 5,903. It is the 106th most populous county out of 115 in Missouri.

Age Demographics

The median age in Sullivan County is 44.2 years. This is 14% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Sullivan County is $55,500. This is 19% lower than the state median of $68,920. Compared to the national median of $78,538, household income here is 29% lower. The poverty rate stands at 14.7%. This is 17% higher than the state poverty rate of 12.6%. The unemployment rate is 2.4%. This is 42% lower than the state rate of 4.1%. The median home value is $103,300. Housing costs are 52% lower than the state median of $215,600. With a home-value-to-income ratio of just 1.9x, Sullivan County is one of the most affordable housing markets in the area. 73.8% of occupied housing units are owner-occupied. This homeownership rate is 9% higher than the state average of 67.9%.

Race & Ethnicity

The largest racial or ethnic group in Sullivan County is White (non-Hispanic), making up 77.2% of the population. Hispanic or Latino residents account for 17.8%. The Black or African American population (2.5%) is well below the state average of 11.0%. The Hispanic or Latino population is significantly higher than the state average (17.8% vs 5.1%). The Asian population (0.8%) is well below the state average of 2.1%.

Education

14.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 54% 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 85.9%.