Carrollton is a census-designated place (CDP) in Isle of Wight County, Virginia, United States. The population as of the 2010 Census was 4,574. It encompasses the entire area from the border with Newport News in the James River, east to the border with the city of Suffolk, south to the area of Benn's Church, and west to the border of the town of Smithfield. The seat of Carrollton lies near the intersection of U.S. Routes 17 and 258 and State Route 32 at the Post Office.