OLDEN, TEXAS. Olden, on Interstate Highway 20 midway between Ranger and Eastland in northern Eastland County, originated as a railroad town on the Texas and Pacific Railway. It was known as Olden Switch and came to life with expectations of silver discoveries. Silver was not found, but Olden survived to benefit from the county oil boom that began in 1919. In 1945 Olden had 500 residents, but by 1980 the population had fallen to 110, where it remained in 1990.