Millard County--maintenance Office 71 S 200 W Delta, UT 84624 Phone : (435) 864-3505 Business Category Government Offices-County Government Offices & Public Schools Fax           (435) 864-1404 Millard County--human Services, Millard County Maintenance Department 265 Manzanita Ave Delta, UT 84624 Phone : (435) 864-3505 Business Category Government Offices-County Legislative Bodies Government Offices & Public Schools