Big Sandy is a town in Upshur County, Texas, United States. The population was 1,288 at the 2000 census. Big Sandy is the only 'wet city' in Upshur County. Smith and Wood County residents near this county line come to buy beer, wine, and liquor. Big Sandy apartments for rent comparison page shows most up to date rent information on Big Sandy apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.