Of 64 counties in the Centennial State, Douglas County ranks 47th by size (842 square miles). Douglas County is in Denver Colorado. Colorado's Douglas County includes approximately 1,000 acres of lakefront land and property for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was around $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.