Meraux is a census-designated place (CDP) in St. Bernard Parish, Louisiana, in the United States. The population was 10,192 at the 2000 census. It is part of the New Orleans–Metairie–Kenner Metropolitan Statistical Area.
In 2005, the town was devastated by storm surge and wind associated with Hurricane Katrina which destroyed the Mississippi River-Gulf Outlet Canal (MRGO) levee.
Meraux is located at 29°55′39″N 89°55′7″W / 29.9275°N 89.91861°W / 29.9275; -89.91861 (29.927561, -89.918508). According to the United States Census Bureau, the CDP has a total area of 4.8 square miles (12.4 km²), of which, 4.2 square miles (10.8 km²) of it is land and 0.6 square miles (1.6 km²) of it (12.94%) is water.