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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 25,430 at the 2000 census. Terrytown was founded on March 5th, 1960, by subdivision developer, Paul Kapelow, who named the town after his first daughter, Terry Kapelow.
According to the United States Census Bureau, the CDP has a total area of 3.8 square miles (9.7 km²), of which, 3.7 square miles (9.6 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.07%) is water.
The two main intersecting streets are Terry Parkway, running north and south, and Carol Sue Ave. (named for Paul Kapelow's second daughter, Carol Sue Kapelow), running east and west.