Carter County is a county in the Ozarks of Missouri. At the 2020 census, it had a population of 5,202. The largest city and county seat is Van Buren. The county was officially organized on March 10, 1859, and is named after Zimri A. Carter, a pioneer settler who came to Missouri from South Carolina in 1812.

Van Buren is a city in Carter County, Missouri, United States. It is the county seat and largest city in Carter County. Van Buren was founded in 1833 as the county seat of Ripley County and was named after then Vice President of the United States, Martin Van Buren. In 1859, Van Buren became a part of the newly created Carter County and was subsequently selected to be the county seat. The 2020 U.S. Census showed Van Buren with a population of 747.