Jacumba Hot Springs is a census-designated place in the Mountain Empire area of southeastern San Diego County, California. It was treated as a census-designated place for the first time in the 2010 census, and had a population of 561. The ZIP code is 91934 and the town lies within area code 619. Its elevation is 2,829 feet above mean sea level. On Feb. 26, 2013, the Federal Geographic Names Commission approved a petition by a citizen committee to change the town's name from Jacumba to Jacumba Hot Springs.