It is located on a former branch of the Southern Pacific Railroad 5.25 miles ( 8.4 km ) north - northwest of Holtville , at an elevation of 82 feet ( 25 m ) below sea level .
Sandia is an unincorporated community in Imperial County , California .
Sandia is located on a former branch of the Southern Pacific Railroad 5.25 miles ( 8.4 km ) north - northwest of Holtville , at an elevation of 82 feet ( 25 m ) below sea level .
Sandia is an unincorporated community in Imperial County , California .