There are 6 Post Offices in Clay County, South Dakota, serving a population of 13,907 people in an area of 413 square miles. There is 1 Post Office per 2,317 people, and 1 Post Office per 68 square miles.
In South Dakota, Clay County is ranked 51st of 66 counties in Post Offices per capita, and 6th of 66 counties in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Clay County Post Offices.
United States Government 205 Main Wakonda, SD
United States Government 205 East Main Street Irene, SD
United States Postal Service 16 Court Street Vermillion, SD Mailing Service, Postal Services
United States Postal Service 109 Ohio Street Wakonda, SD Mailing Service, Postal Services
United States Postal Service 533 Broadway Street Centerville, SD Mailing Service, Postal Services
United States Postal Service 205 West Main Street Irene, SD Mailing Service, Postal Services