Of 99 counties in the Cyclone State, Delaware County is 35th in terms of its size (578 square miles). Delaware County is in Eastern Iowa. Delaware County, Iowa, includes almost 1,000 acres of riverfront land and property for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was around $700,000. Browse all waterfront property for sale in Delaware 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 Delaware County is residential property.