There are 3 Post Offices in Sioux County, North Dakota, serving a population of 4,420 people in an area of 1,094 square miles. There is 1 Post Office per 1,473 people, and 1 Post Office per 364 square miles.
In North Dakota, Sioux County is ranked 39th of 53 counties in Post Offices per capita, and 44th of 53 counties in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Sioux County Post Offices.
United States Postal Service 110 South River Road Fort Yates, ND Mailing Service, Postal Services
United States Postal Service 202 North Main Street Solen, ND Mailing Service, Postal Services
United States Postal Service 70 South Main Street Selfridge, ND Mailing Service, Postal Services