²ÝÝ®ÊÓƵPost Office announces summer retail hours Beginning Friday [May 21], the ²ÝÝ®ÊÓƵPost Office will have retail hours of 9 a.m. to 4 p.m. Monday through Friday. The Starkville Post Office is open from 8:30 a.m. to 5:30 p.m.