Mehlville is a census-designated place (CDP) in St. Louis County, Missouri, United States, and an inner-ring suburb of St. Louis. The population was 28,380 at the 2010 census.GeographyMehlville is located at . According to the United States Census Bureau, the CDP has a total area of 7.6sqmi, of which 7.4sqmi is land and 0.2sqmi, or 2.77%, is water.DemographicsAs of the census of 2000, there were 28,822 people, 12,541 households, and 7,775 families residing in the CDP. The population density was 3,913.6 people per square mile (1,512.0/km²). There were 12,982 housing units at an average density of 1,762.8/sq mi (681.0/km²). The racial makeup of the CDP was 97.08% White, 0.75% African American, 0.13% Native American, 1.77% Asian, 0.02% Pacific Islander, 0.34% from other races, and 0.61% from two or more races. Hispanic or Latino of any race were 1.45% of the population.
