ConocoWrite a Review641-479-2242Be the first to review!804 W Main St, Marshalltown, IA 50158Hi there!Be the first to review!5First-class4Better than most3About what I expected2Not the worst...1DisappointingClick to RateMore Business InfoHoursDo you know the hours for this business?CategoriesGas Stations, Convenience Stores Suggest an Edit