Sondheimer is an unincorporated community in East Carroll Parish, Louisiana, United States. The community is located on U.S. Route 65, south of Lake Providence. Sondheimer has a post office with ZIP code 71276.
Sondheimer was named for Emanuel Sondheimer, founder of the Chicago-based lumber company that purchased the original tracts of timberland that became the community."Louisiana Place Names: Popular, Unusual, and Forgotten Stories of Towns, Cities, Plantations, Bayous, and Even Some Cemeteries" Claire D'Artois Leeper
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