Reserve is an unincorporated community in St. John the Baptist Parish, Louisiana, United States, on the east bank of the Mississippi River. The population was 9,111 at the 2000 census. For statistical purposes, the United States Census Bureau has defined Reserve as a census-designated place (CDP).
The census definition of the area may not precisely correspond to local understanding of the area with the same name.
In the early 20th century, the plantation at Reserve had the largest sugarcane refinery in the United States.
President William Howard Taft visited Reserve in 1909, while President Gerald Ford visited Reserve in 1976.
Reserve was the birthplace of jazz musicians Edmond Hall and Kid Thomas Valentine.
The Godchaux-Reserve home, the oldest portion of which dates to 1764, is a building on the National Register of Historic Places. In addition, in 2005 Our Lady of Grace Catholic Church which dates back to 1937 was added to The Louisiana National Register of Historic Places (http://www.crt.state.la.us/hp/). Our Lady of Grace was built to serve the needs of the African American Catholic Community.
In 2015 the Environmental Protection Agency reported findings of the existence of an extremely high risk of cancer in the region and noted that Reserve was the epicenter of the area of high risk for cancer. The agency identified releases of chloroprene as responsible for the high risk.