24/7 Trauma and Biohazard Cleanup in East Thermopolis, WY

East Thermopolis is a town in Hot Springs County, Wyoming, with a population of 229 at the 2020 census, down from 254 in 2010 and a peak of 359 in 1980.

East Thermopolis became its own town when it incorporated in 1948.

The east side of the river was once known as Andersonville, and before a bridge was built, people crossed the river by rope ferry.

When the town of Thermopolis to the west was growing after it became a town in 1899, the east side had only a store, two saloons, and an eating house.

East Thermopolis sits near the northern end of the Wind River Canyon and the Wedding of the Waters, where the north-flowing Wind River becomes the Bighorn River.

The town is ringed by mountains, with the Big Horn Mountains to the northeast, the Bridger Mountains to the southeast, the Owl Creek Mountains to the southwest, and the Absaroka Range to the northwest, at the southern end of the Bighorn Basin.

The town covers 0.18 square miles, all land, at an elevation of 4,341 feet.

At the 2010 census, East Thermopolis had 157 households and a median age of 64.8 years, with 49.2 percent of residents aged 65 or older.

Mail for the town is served by Thermopolis' ZIP code 82443.

East Thermopolis has a mayor and town council, and Gary Holbert was elected mayor in 2022.