Meraux is a census-designated place (CDP) in St. Bernard Parish, Louisiana, 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 (29.927561, -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) is land and 0.6 square mile (1.6 km2) (12.94%) is water.
As of the census of 2000, there were 10,192 people, 3,707 households, and 2,772 families residing in the CDP. The population density was 2,447.8 people per square mile (946.0/km2). There were 3,793 housing units at an average density of 911.0 per square mile (352.0/km2). The racial makeup of the CDP was 92.71% White, 3.66% African American, 0.47% Native American, 1.63% Asian, 0.33% from other races, and 1.20% from two or more races.