Of 39 counties in the Evergreen State, Okanogan County ranks first in terms of size (3 million acres). Okanogan County is in the Cascade Range Washington region. The most common type of land for sale by combined acreage in Okanogan County is residential property. Browse all waterfront property for sale in Okanogan 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!