Teays Valley is a census-designated place (CDP) in Putnam County, West Virginia, United States. The place is divided into the two districts of Teays Valley and Scott Depot. The population was 13,175 at the 2010 census. According to the United States Census Bureau, the CDP has a total area of 7.3 square miles (18.8 km²), of which 7.2 square miles (18.6 km²) is land and 0.1 square miles (0.3 km²) (1.34%) is water. The valley referred to by "Teays Valley" is a portion of the remains of the pre-glacial Teays River. Today, the valley's water is shed through a number of creeks which empty into the Kanawha and Mud rivers.