Moore County Tax Collector 700 S Bliss Ave Dumas, TX 79029 Phone : (806) 935-2175 Business Category Public Finance Taxation & Monetary Policy Moore County--court House, Tax Assessor-collector Nikki Mcdonald Dumas, TX 79029 Phone : (806) 935-2175 Business Category Government Offices-County Government Offices & Public Schools Moore County--tax Collectors Ofc Courthouse Dumas, TX 79029 Phone : (806) 935-2175 Business Category Government Offices-County Government Offices & Public Schools