Bluff Dale is an unincorporated community and census designated place in Erath County, Texas, United States. The Bluff Dale Independent School District serves area students. Bluff Dale, Texas is on U.S. Highway 377 and the North Paluxy River in northeastern Erath County. It was originally called Bluff Springs by pioneers who settled nearby; Bluff Dale became the town name when the post office was established in 1877.