Of 99 counties in the Cyclone State, Humboldt County is 85th in terms of its size (435 square miles). Humboldt County is in Western Iowa. The total value of about 1,000 acres of riverfront homes and property recently listed for sale in Humboldt County, Iowa, was around $500,000. Browse all waterfront property for sale in Humboldt 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 Humboldt County is house.