During World War II, Seagoville was the site of a Justice Department detention camp for Americans of Japanese, German, and Italian descent who were classified as "alien enemies." Seagoville is fast growing and improving in economic development. Plans are in place to rebuild downtown Seagoville into a new retail area. The surrounding areas had been approved for substantial property upgrades. This project is entitled Town Center. This project was approved as a go-ahead by the Planning and Zoning Committee on December 13, 2007. Seagoville is a city in Dallas County, Texas, United States, and a suburb of Dallas. A small portion of Seagoville extends into Kaufman County. The population was 10,823 as of the 2000 census. The city is located along U.S. Highway 175 and the Southern Pacific Railroad ten miles from Downtown Mesquite.