Valley Mills is a city in Bosque and McLennan counties in central Texas, United States. The population was 1,203 at the 2010 census.

Bosque County is a county located in the greater Waco area. The county sits just northwest of Waco in the U.S. state of Texas. As of the 2020 census, the population was 18,235. Its county seat is Meridian, while Clifton is the largest city and the cultural/financial center of the county. The county is named for the Bosque River, which runs through the center of the county north to south. The Brazos River makes up the eastern border, along with the Lake Whitney reservoir it feeds.