Morgan County is a county located in the central portion of the U.S. state of Missouri. As of the 2010 census, the population was 20,565. Its county seat is Versailles. The county was organized January 5, 1833 and named for General Daniel Morgan of the American Revolutionary War.
According to the U.S. Census Bureau, the county has a total area of 614 square miles (1,590 km), of which 598 square miles (1,550 km) is land and 16 square miles (41 km) (2.7%) is water.
As of the census of 2007, there were 20,820 people, over 7,850 households, and over 5,549 families residing in the county. The population density was 32 people per square mile (12/km²). There were 13,898 housing units at an average density of 23 per square mile (9/km²). The racial makeup of the county was 97.34% White, 0.51% Black or African American, 0.63% Native American, 0.12% Asian, 0.02% Pacific Islander, 0.16% from other races, and 1.22% from two or more races. Approximately 0.83% of the population were Hispanic or Latino of any race.
There were 7,850 households out of which 26.60% had children under the age of 18 living with them, 60.50% were married couples living together, 7.10% had a female householder with no husband present, and 29.30% were non-families. 25.10% of all households were made up of individuals and 11.90% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.88.
In the county, the population was spread out with 23.80% under the age of 18, 6.20% from 18 to 24, 23.10% from 25 to 44, 27.30% from 45 to 64, and 19.60% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 97.20 males. For every 100 females age 18 and over, there were 95.00 males.
The median income for a household in the county was $30,659, and the median income for a family was $35,908. Males had a median income of $26,579 versus $19,072 for females. The per capita income for the county was $15,950. About 12.10% of families and 16.20% of the population were below the poverty line, including 25.60% of those under age 18 and 9.70% of those age 65 or over.