Cassville is a city in Flat Creek Township, Barry County, Missouri, United States. The population was 2,890 at the 2000 census. It is the county seat of Barry County. Crowder College offers 2 year degree programs in Cassville. The city was connected by rail via the Cassville & Exeter Railroad from July 4, 1896 to September 11, 1956.
According to the United States Census Bureau, Cassville has a total area of 2.8 square miles (7.1 km²), all of it land.
As of the census of 2000, there were 2,890 people, 1,194 households, and 770 families residing in the city. The population density was 1,046.0 people per square mile (404.3/km²). There were 1,307 housing units at an average density of 473.0 per square mile (182.8/km²). The racial makeup of the city was 96.30% White, 0.03% African American, 0.73% Native American, 0.69% Asian, 1.11% from other races, and 1.14% from two or more races. Hispanic or Latino of any race were 2.63% of the population.