There are 3 Post Offices in Douglas County, South Dakota, serving a population of 2,940 people in an area of 432 square miles. There is 1 Post Office per 980 people, and 1 Post Office per 143 square miles.
In South Dakota, Douglas County is ranked 35th of 66 counties in Post Offices per capita, and 27th of 66 counties in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Douglas County Post Offices.
United States Postal Service 814 Main Avenue Armour, SD Mailing Service, Postal Services
United States Postal Service 208 East Main Street New Holland, SD Mailing Service, Postal Services
United States Postal Service 225 East Main Street Corsica, SD Mailing Service, Postal Services