The Upper Gulf Coast is generally used to refer to the Houston area and its surrounding counties, with a distinct climate and demography from the coastal counties of East and South Texas. The value of land and rural real estate for sale in Harris County, Texas, recently on Land.com was $2 billion. This represents 7,000 acres of land for sale in Harris County. Harris County ranks second out of 254 counties in the Lone Star State for the combined amount of land currently advertised for sale. Houston had the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Texas. Harris County is the 15th biggest county (1,777 square miles) in Texas. It's located in the Houston Texas region of Texas.