Slope County Of--amidon, Treasurer-courthouse Amidon, ND 58620 Phone : (701) 879-6272 Business Category Government Offices-County Government Offices & Public Schools Slope County Of--treasurer Courthouse Amidon, ND 58620 Phone : (701) 879-6272 Business Category Government Offices-County Public Finance Taxation & Monetary Policy Government Offices & Public Schools