Of 36 counties in the Beaver State, Polk County ranks 30th by size (744 square miles). Polk County is in Northwest Oregon. There is nearly 1,000 acres of riverfront land and property for sale in Oregon's Polk County based on recent Land Network data. The combined market value of land for sale here is almost $10 million. Browse all waterfront property for sale in Polk 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 Polk County is residential property.