Mertens is a town in Hill County, Texas, United States. It is located along State Highway 22. The population was 144 at the 2020 census. Mertens is located in eastern Hill County in Central Texas. The eastern border of the town in part is the Navarro County line. Via Highway 22, Hillsboro is 14 miles to the west and Corsicana is 26 miles to the east.