Seagoville (/ˈsiːɡoʊvɪl/ SEE-goh-vil) is a city in Dallas County, Texas, United States, and a suburb of Dallas. A small portion of Seagoville goes into Kaufman County. The population was 18,446 at the 2020 census.[1] The city is located along U.S. Highway 175. It is 10 miles (16 km) from downtown Mesquite.[2]