Of 64 counties in the state, Douglas County is 47th in terms of its size (842 square miles). Douglas County is in Denver Colorado. The total value of around 1,000 acres of lakefront land and property recently listed for sale in Douglas County, Colorado, was nearly $5 million. Browse all waterfront property for sale in Douglas 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 Douglas County is residential property.