Moore County--treasurer Courthouse Dumas, TX 79029 Phone : (806) 935-2019 Business Category Government Offices-County Public Finance Taxation & Monetary Policy Government Offices & Public Schools Moore County Of--extention Agent, Treasurer Courthouse Dumas, TX 79029 Phone : (806) 935-2019 Business Category Government Offices-County Government Offices & Public Schools Moore County--court House, County Treasurer Pam Cox Dumas, TX 79029 Phone : (806) 935-2019 Business Category Government Offices-County Government Offices & Public Schools