Kelly is a census-designated place in Bladen County, North Carolina, United States. The population was 544 at the 2010 census.Kelly is located at 34°27′35″N 78°18′17″W / 34.45972°N 78.30472°W / 34.45972; -78.30472.According to the United States Census Bureau, the CDP has a total area of 11.6 square miles, all of it land.As of the census of 2000, there were 454 people, 205 households, and 138 families residing in the CDP. The population density was 39.2 people per square mile. There were 244 housing units at an average density of 21.1/sq mi. The racial makeup of the CDP was 50.66% White, 46.92% African American, 0.44% Native American, 0.22% Pacific Islander, 1.76% from other races. Hispanic or Latino of any race were 1.76% of the population.There were 205 households out of which 21.5% had children under the age of 18 living with them, 46.8% were married couples living together, 17.6% had a female householder with no husband present, and 32.2% were non-families. 31.