Mandeville is a city in St. Tammany Parish, Louisiana, United States. The population was 11,560 at the 2010 census. Mandeville is located on the North Shore of Lake Pontchartrain, south of Interstate 12. It is across the lake from the city of New Orleans and its southshore suburbs. It is part of the New Orleans–Metairie–Kenner metropolitan area.
The area had long been agricultural land when the town of Mandeville was laid out in 1834 by developer Bernard Xavier de Marigny de Mandeville, more often known as Bernard de Marigny. In 1840 Mandeville was incorporated as a town. It became a popular summer destination for well-to-do New Orleanians wishing to escape the city's heat.
In the mid-19th century, regular daily steamboat traffic between New Orleans and Mandeville began, and by the end of the Victorian era, it had become a popular weekend destination of the New Orleans middle class as well. Bands would play music on the ships going across the lake and at pavilions and dance halls in Mandeville, and the town became one of the first places where the new "jazz" music was heard outside of New Orleans. Bunk Johnson, Buddy Petit, Papa Celestin, George Lewis, Kid Ory, Edmond Hall, Chester Zardis, and many other early jazz artists regularly played in Mandeville.
In the late 19th century, Mandeville was home of the Harvey School, a college preparatory institution. Among those educated there was Andrew Querbes, then of New Orleans and later the mayor of Shreveport.
Two buildings from early jazz history still stand in Mandeville. Ruby's Roadhouse has been in continuous operation since the 1920s and is still a popular bar and live music venue today. The Dew Drop Social and Benevolent Hall, listed on the National Register of Historic Places, opened in January 1895. It closed with the onset of the Great Depression and was only used for storage for decades, preserving the dance hall unchanged from the early 20th century, until it reopened in 2000 as the Dew Drop Jazz & Social Hall, a live jazz venue. (This was one of the earliest "Dew Drop" dance halls; venues across the South were similarly named, including the club in New Orleans where Little Richard got his start.)
In 1956, the first span of the Lake Pontchartrain Causeway opened to automobile traffic. A second span was added in 1969. The new road spurred the growth of Mandeville and the surrounding area as a suburban commuter community for people working in New Orleans. This trend increased in the 1980s and 1990s, further integrating Mandeville into the Greater New Orleans metropolitan area.
Mandeville is home to Southeast Louisiana Hospital, a mental health facility. Louisiana governor Earl Long was committed here in 1959 amidst much controversy. In July 2012, the Louisiana State Department of Health announced the closure of the hospital, citing reduced federal money for Medicaid.
Mandeville was affected by Hurricane Katrina's storm surge in August 2005 and received water and wind damage. Parts of the city also experienced less dramatic flooding when Lake Pontchartrain overflowed its banks due to Hurricane Ike in 2008. By 2009, most of the reconstruction from Katrina was completed. Many homes and businesses in areas that experienced flooding have been elevated.
Mandeville was named one of the Relocate America Top 100 Places to Live in 2004, 2005, 2007, 2008, and 2009.
Mandeville was among the recipients of Google's eCity award in 2013, given to those cities whose small businesses most effectively employ the internet to attract customers.