what city is lake belton in
Belton, Texas. Belton Lake. The City of Belton -- county seat of Bell County, Texas, United States -- is located in Central Texas. The population was 20,547 in 2015 according to a US Census Estimate. Belton is located in the center of the Killeen â Temple â Fort Hood metropolitan area. As of 2015 the metro region had a population of 450,051.