List of Longhorn Steakhouse Stores in Waterloo, IA Outlet Note Regular Brands Longhorn Steakhouse Iowa Waterloo Rating 5 based on 75 votes Official Website http://www.longhornsteakhouse.com/ Products Food Starters NameAddressPhone Name/Address/Phone Longhorn Steakhouse outlet - Waterloo 1425 E San Marnan Dr (319) 235-4336 People Also Viewed