Orange County is in Orange County California. Of the 58 counties in the El Dorado State, Orange County ranks 46th in terms of size (947 square miles). Browse all waterfront property for sale in Orange 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 Orange County is residential property.