There are 2 Post Offices in Powder River, Wyoming, serving a population of 44 people in an area of 6 square miles. There is 1 Post Office per 22 people, and 1 Post Office per 2 square miles.
In Wyoming, Powder River is ranked 18th of 243 cities in Post Offices per capita, and 100th of 243 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Powder River Post Offices.
US Post Office 35304 West Highway 20 26 Powder River, WY
United States Postal Service 35304 West Highway 20 26 Powder River, WY Mailing Service, Postal Services