Clinton County, Missouri Demographics 2026

Population Overview

Clinton County is located in Missouri with a total population of 21,259. It is the 53rd most populous county out of 115 in Missouri. The county encompasses 7 Census-designated places.

Age Demographics

The median age in Clinton County is 42.1 years. This is 8% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Clinton County is $70,625. This is 2% higher than the state median of $68,920. It is also 10% lower than the national median of $78,538. The poverty rate stands at 12.8%. This is 1% higher than the state poverty rate of 12.6%. The unemployment rate is 4.4%. This is 7% higher than the state rate of 4.1%. The median home value is $204,300. Housing costs are 5% lower than the state median of $215,600. With a home-value-to-income ratio of just 2.9x, Clinton County is one of the most affordable housing markets in the area. 76.1% of occupied housing units are owner-occupied. This homeownership rate is 12% higher than the state average of 67.9%.

Race & Ethnicity

Clinton County has a predominantly White (non-Hispanic) population, comprising 92.2% of all residents. Hispanic or Latino residents account for 2.5%. The Black or African American population (0.7%) is well below the state average of 11.0%. The Asian population (0.4%) is well below the state average of 2.1%.

Education

22.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 29% 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 93.7%.

Data Sources & Methodology

All figures for Clinton County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against Missouri and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.