Powder River is a census-designated place (CDP) in Natrona County, Wyoming, United States. It is part of the Casper, Wyoming Metropolitan Statistical Area. The population was 30 in the 2020 census and 44 in the 2010 census.
History
A post office called Powder River has been in operation since 1904. The community was named after the Powder River. A Chicago and Northwestern Railroad Depot built in 1910 still stands and was listed on the National Register of Historic Places in 1988.
Geography
According to the United States Census Bureau, the CDP has a total area of 6.0 square miles (15.4 km<sup>2</sup>), of which 5.9 square miles (15.3 km<sup>2</sup>) is land and 0.1 square mile (0.1 km<sup>2</sup>) (0.84%) is water.
Climate
Demographics
As of the census