Hemphill County Extension Service 400 Main St Canadian, TX 79014 Phone : (806) 323-9114 Business Category Government Offices-County Legislative Bodies Hemphill County Of--county Extension Agent, Home Economics Court House Canadian, TX 79014 Phone : (806) 323-9114 Business Category Government Offices-County Government Offices & Public Schools Hemphill County Of--home Economics Courthouse Canadian, TX 79014 Phone : (806) 323-9114 Business Category Government Offices-County Government Offices & Public Schools