There are 393 Mailing Services in South Dakota, serving a population of 855,444 people in an area of 75,791 square miles. There is 1 Mailing Service per 2,176 people, and 1 Mailing Service per 192 square miles.
The state of South Dakota is ranked 3rd in Mailing Services per capita, and 44th in Mailing Services per square mile.