Justice Of The Peace 34 3rd Ave W Roundup, MT 59072 Phone : (406) 323-1078 Business Category Government Offices-County Legislative Bodies Roundup City Court 34 3rd Ave W Roundup, MT 59072 Phone : (406) 323-1078 Business Category Police Departments Musselshell County Of--justice Of The Peace Roundup, MT 59072 Phone : (406) 323-1078 Business Category Government Offices-County Government Offices & Public Schools Roundup City Of--police Court Roundup, MT 59072 Phone : (406) 323-1078 Business Category Government Offices-City Village & Twp Police Departments Government Offices State & Local Government Offices & Public Schools