North Vernon is a city in Jennings County, Indiana, United States. The population was 6,728 at the 2010 census. As of the census of 2000, there were 6,515 people, 2,665 households, and 1,684 families residing in the city. The population density was 1,484.4 people per square mile (573.0/km2). There were 2,892 housing units at an average density of 658.9 per square mile (254.4/km2). The racial makeup of the city was 96.47% White, 1.49% African American, 0.20% Native American, 0.40% Asian, 0.28% from other races, and 1.17% from two or more races. Hispanic or Latino of any race were 1.04% of the population.