The population was 56 at the 2010 census. Although Echo has never had a sizable population, the town is historically significant.
Echo originated as a stopover along the Mormon trail. Later the town served as a junction between the First Transcontinental Railroad and a spur line to serve silver mines near Park City. Since the creation of U.S. Highways Echo has served as a highway junction, where the main road coming from Wyoming splits with one branch proceeding towards Salt Lake City, continuing towards San Francisco, California, and the other towards Ogden, continuing to Portland, Oregon.