Rosseau, Ohio From Wikipedia, the free encyclopedia Unincorporated community in Ohio, U.S. Rosseau is an unincorporated community in Morgan County, in the U.S. state of Ohio.[1] Rosseau was laid out around 1836.[2] A post office was established at Rosseau in 1837, and remained in operation until 1911.[3] References ↑ U.S. Geological Survey Geographic Names Information System: Rosseau, Ohio ↑ Robertson, Charles (1886). History of Morgan County, Ohio, with Portraits and Biographical Sketches of Some of Its Pioneers and Prominent Men. L. H. Watkins & Company. p. 496. ↑ "Morgan County". Jim Forte Postal History. Retrieved December 11, 2015. vteMunicipalities and communities of Morgan County, Ohio, United StatesCounty seat: McConnelsvilleVillages Chesterhill Malta McConnelsville Stockport Map of Ohio highlighting Morgan CountyTownships Bloom Bristol Center Deerfield Homer Malta Manchester Marion Meigsville Morgan Penn Union Windsor York CDP Rose Farm‡ Othercommunities Bishopville‡ Bristol Deavertown Eagleport Hooksburg Joy Meigs Morganville Moscow Mills Neelysville Pennsville Plantsville Reinersville Ringgold Rokeby Lock Rosseau Roxbury Todds Triadelphia Unionville Footnotes‡This populated place also has portions in an adjacent county or counties. Ohio portal United States portal 39°34′25″N 81°56′49″W / 39.57361°N 81.94694°W / 39.57361; -81.94694 This Morgan County, Ohio state location article is a stub. You can help Wikipedia by expanding it.vte Related Articles~TimelinesTop QsFact Checks