Benton County is in Northwest Oregon. Of the 36 counties in the Beaver State, Benton County ranks 34th in terms of size (434,029 acres). The most common type of land for sale by combined acreage in Benton County is residential property. Browse all waterfront property for sale in Benton 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!