NULL Of 254 counties in the Lone Star State, Orange County is 246th in terms of its size (379 square miles). Orange County is in Houston Texas. Texas's Orange County has approximately 1,000 acres of riverfront land and property for sale based on recent Land Network data. The combined market value of land for sale here was roughly $10 million. 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.