what county is sandia texas in
Sponsored Topics. Sandia is a census-designated place (CDP) in Jim Wells County, Texas, United States. The population was 431 at the 2000 census. Sandia was in the Casa Blanca land grant, issued to Juan JosÃ© de la Garza Montemayor by Spain on April 2, 1807. The Montemayor family occupied the land until 1852.