Sidney City Of--cheyenne County Chamber Of Commerce Sidney, NE 69162 Phone : (308) 254-5851 Business Category Government Offices-City Village & Twp Associations Chambers Of Commerce Government Offices State & Local Government Offices & Public Schools Cheyenne County Chamber-cmmrc 740 Illinois St Sidney, NE 69162 Phone : (308) 254-5851 Business Category Associations Chambers Of Commerce