Terrytown is a census-designated place (CDP) in Jefferson Parish, Louisiana on the West Bank of the Mississippi River. It is a suburb within the New Orleans–Metairie–Kenner Metropolitan Statistical Area. The population was 23,319 at the 2010 census. Terrytown was opened to a media tour on March 5, 1960 showcasing the newest of concepts in home construction at the time with the original homes having all plumbing in one wall and was opened to the public and considered founded on March 6, 1960, by subdivision developer, Paul Kapelow, who named the town after his first daughter, Terry Kapelow.