Montgomery County Of--human Resources 215 Roanoke St Christiansburg, VA 24073 Phone : (540) 394-2007 Business Category Government Offices-County Legislative Bodies Government Offices & Public Schools Montgomery County--engineer Christiansburg, VA 24068 Phone : (540) 394-2007 Business Category Government Offices-County Government Offices & Public Schools Montgomery County Of--general Services, Environmental Engineering Christiansburg, VA 24068 Phone : (540) 394-2007 Business Category Government Offices-County Government Offices & Public Schools