Dairy Queen Address: 100 Highway 30 SE, Mount Vernon, IA 52314 Phone: (319) 895-9563 Restaurants Other Businesses: China Cafe at 100 Highway 30 SE, Mount Vernon, IA 52314 Si Senor Mexican Grill at 100 Highway 30 SE, Mount Vernon, IA 52314 Healthmarkets Insurance - Russell Perry at 25 Ivanhoe Circle, Mount Vernon, IA 52314 Caseys Carry Out Pizza at 323 Highway 30 SW, Mount Vernon, IA 52314