About Norco, Louisiana
Coordinates: 30°00?14?N 90°24?39?W? / ?30.00389°N 90.41083°W? / 30.00389; -90.41083Norco is a census-designated place (CDP) in St. Charles Parish, Louisiana, United States. The population was 3,579 at the 2000 census. The community is home to a major Shell petroleum refinery. Its name is derived from the New Orleans Refining Company.