Of 56 counties in the Treasure State, Dawson County ranks 28th by size (2,383 square miles). Dawson County is in Southeast Montana. There is nearly 11,000 acres of riverfront land for sale in Dawson County, Montana, based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here is $9 million. Browse all waterfront property for sale in Dawson 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 Dawson County is house.