Watertown Post Office

Address

405 E Kemp Ave, Watertown, SD 57201

Phone

(605) 886-7765

Website

tools.usps.com/find-location.htm?y_source=1_MzM3NTQ2NS00NDAtbG9jYXRpb24ud2Vic2l0ZQ==&searchRadius=10&address=57201&locationType=po

Last checked September 23, 2026. Call ahead to confirm hours.

Listing details from Overture Maps open data.