Post Office - Olivet 145 Euclid St Olivet, SD 57052 Phone : (605) 387-5131 Post Office - Olivet Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (605) 357-4906 United States Government--olivet, Post Office 145 E Euclid St Menno, SD 57045 Phone : (605) 387-5131 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools United States Government--menno, Post Office 145 Euclid St Olivet, SD 57052 Phone : (605) 387-5131 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools