River Ridge is an unincorporated community and census-designated place (CDP) in Jefferson Parish, Louisiana, United States. It is a suburb of New Orleans. The population was 13,591 in 2020.

Jefferson Parish is a parish in the U.S. state of Louisiana. As of the 2020 census, the population was 440,781. Its parish seat is Gretna, its largest community is Metairie, and its largest incorporated city is Kenner. Jefferson Parish is included in the Greater New Orleans area.