Matches in DBpedia 2014 for { ?s ?p Rison is an unincorporated community in Charles County, Maryland, United States. The Rison post office was established in 1905, but the area's residents are now part of the 20640 zip code area for nearby Indian Head, Maryland. Its elevation is 50 feet and it had a population of 50 in 1941. Revolutionary War General William Smallwood's home is preserved at Smallwood State Park in Rison along the Mattawoman Creek.. }
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- Rison,_Maryland comment "Rison is an unincorporated community in Charles County, Maryland, United States. The Rison post office was established in 1905, but the area's residents are now part of the 20640 zip code area for nearby Indian Head, Maryland. Its elevation is 50 feet and it had a population of 50 in 1941. Revolutionary War General William Smallwood's home is preserved at Smallwood State Park in Rison along the Mattawoman Creek.".