San Isidro is a location in the Dominican Republic at the east of Santo Domingo, notable for the San Isidro Air Force Base, the San Isidro free zone and Motels. Baseball player Welington Castillo is from there. It is located at 18.5333 latitude and -69.7667 longitude. It has an altitude of 39 feet.
References
San Isidro, Dominican Republic Wikipedia(Text) CC BY-SA