Post Offices in & near Seneca, South Dakota. Operating hours, locations, phone/fax number, services information.
Post Office in Seneca, South Dakota on Pine St. Operating hours, phone number, services information, and other locations.
Address: 200 Pine St, Seneca, SD 57473
Phone: 605-436-6243
Fax: 605-357-4906
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
