Summit County Of--all Offices Except Those Listed Below, Park City Park City, UT 84060 Phone : (435) 615-3200 Business Category Government Offices-County Government Offices & Public Schools Summit County Of--courthouse 60 Main St Coalville, UT 84017 Phone : (435) 615-3200 Business Category Government Offices-County Government Offices & Public Schools Summit County Of--main Number Park City, UT 84098 Phone : (435) 615-3200 Business Category Government Offices & Public Schools