Of 64 counties in the Mile High State, Summit County is 55th in terms of its size (619 square miles). Summit County is in Northwest Colorado. Recent listings of lakefront homes and property for sale in Colorado's Summit County totals roughly 1,000 acres and a combined market value of nearly $6 million. The most common type of land for sale by combined acreage in Summit County is residential property. Browse all waterfront property for sale in Summit 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 Summit County is residential property.