Oldham City Of City Hall Oldham, SD 57051 Phone : (605) 482-8311 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Oldham City Of--city Office Oldham, SD 57051 Phone : (605) 482-8311 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools City Of Oldham Po Box 4 Oldham, SD 57051 Phone : (605) 482-8311 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools