Dallas County Tax Department 918 Court St Adel, IA 50003 Phone : (515) 993-5808 Business Category Public Finance Taxation & Monetary Policy Dallas County Of--treasurer, Property Tax Dept Courthouse Adel, IA 50003 Phone : (515) 993-5808 Business Category Government Offices-County Government Offices & Public Schools Dallas County Of--treasurer, Tax Dept 918 Court St Adel, IA 50003 Phone : (515) 993-5808 Business Category Government Offices-County Government Offices & Public Schools