Manvel is a city in Brazoria County, Texas, United States. The current population is approximately 7,160 as of April 2008, a 235% growth over the 3,046 population recorded in the last official US Census in 2000. According to the United States Census Bureau, the city has a total area of 23.3square miles (60Square kilometers), all of it land. As of an April 2008 local government estimate, the population is around 7,160. The previous official census estimate census in 2000, listed the population as 3,046people, 1,085households, and 870 families residing in the city. The population density is now 220people per square mile, an increase over 130.7people per square mile (50.5Square kilometers) in 2000.