NULL Of 254 counties in the Lone Star State, Rains County is 250th in terms of its size (258 square miles). Rains County is in Dallas Prairie Texas. Texas's Rains County has almost 1,000 acres of riverfront homes and property for sale based on recent Land Network data. The combined market value of land for sale here was approximately $3 million. Browse all waterfront property for sale in Rains 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 Rains County is undeveloped land.