There are 3 Post Offices in Bennett County, South Dakota, serving a population of 3,440 people in an area of 1,185 square miles. There is 1 Post Office per 1,146 people, and 1 Post Office per 394 square miles.
In South Dakota, Bennett County is ranked 39th of 66 counties in Post Offices per capita, and 55th of 66 counties in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Bennett County Post Offices.
US Post Office 426 Oglala Loop Allen, SD Postal Services, Shipping Agent
United States Postal Service 426 Oglala Loop Allen, SD Mailing Service, Postal Services
United States Postal Service 506 3rd Avenue Martin, SD Mailing Service, Postal Services