is the 10th most populous city in the U.S. state of Arkansas, the county seat of Garland County, and the principal city of the Hot Springs Metropolitan Statistical Area encompassing all of Garland County. According to 2005 Census Bureau estimates, the population of the city was 37,847.. According to the 2007 US Census, Hot Springs has a population of 39,064.
Hot Springs is traditionally best known for the natural spring water that gives it its name, flowing out of the ground at a temperature of 147 degrees Fahrenheit (64 degrees C). Hot Springs National Park is the oldest federal reserve in the USA, and the tourist trade brought by the famous springs make it a very successful spa town.
According to the United States Census Bureau, the city has a total area of 33.0 square miles (85.5 km²), of which, 32.9 square miles (85.2 km²) of it is land and 0.1 square miles (0.3 km²) of it (0.36%) is water.