It is one of the many communities of the Black Hills Indian Reservation. Thermal is located 3.3 miles southeast of Coachella and 6 miles northwest of Mecca. According to the 2010 census, the population of Thermal which is a cdp or Census Designated Place, is 2,865. There are 761 housing units. The average household size is 3.7 persons per housing unit. Elevation is -138 feet below sea level. Zip code is 92274. Below are several google earth photos of Thermal.