Sandia is an unincorporated community and census-designated place (CDP) in Jim Wells County, Texas, United States.

[3] Sandia was a part the Casa Blanca land grant, issued to Juan José de la Garza Montemayor by Spain on April 2, 1807.

Upon his death, the ranch was divided among his heirs, one of whom sold his share to Joseph B. Dibrell.

In 1936 Sandia had three businesses, two churches, multiple farm units, and several dwellings and was a stop on the Texas and New Orleans Railroad.

[4] Texas State Highway 359 forms the northwest side of the community, leading northeast 6 miles (10 km) to Mathis and southwest 24 miles (39 km) to Alice, the Jim Wells county seat.

According to the United States Census Bureau, the Sandia CDP has a total area of 1.0 square mile (2.5 km2), of which 0.3 acres (1,089 m2), or 0.04%, are water.

[3] The town is on high ground 1 mile (1.6 km) south of Lake Corpus Christi, an impoundment on the Nueces River.

Sandia is served by the Orange Grove Independent School District.