Of 56 counties in the state, Rosebud County ranks fifth by size (5,025 square miles). Rosebud County is in Southeast Montana. Recent listings of riverfront property for sale in Rosebud County, Montana, totals nearly 4,000 acres and a combined market value of $7 million. The most common type of land for sale by combined acreage in Rosebud County is house. Browse all waterfront property for sale in Rosebud County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits! The most common type of land for sale by combined acreage in Rosebud County is house.