Hot Springs is the warmest place in South Dakota with an annual mean temperature of . Some of the attractions in the Hot Springs area are the Mammoth Site of Hot Springs and Evans Plunge with its naturally warm spring water. The town is a gateway to the attractions of the southern Black Hills, particularly Wind Cave National Park. Hot Springs holds the annual Miss South Dakota pageant.
Hot Springs is also the home of the Department of Veterans Affairs Medical Center (Black Hills Healthcare System - Hot Springs Campus). The center boasts extensive outpatient treatment, acute hospital care and a 100 bed domiciliary that houses a PTSD treatment ward and an alcohol and drug treatment facility.
Hot Springs is located at (43.431148, -103.477591).
According to the United States Census Bureau, the city has a total area of , all of it land.
Hot Springs has been assigned the ZIP code 57747 and the FIPS place code 30220.
There were 1,704 households out of which 23.5% had children under the age of 18 living with them, 42.0% were married couples living together, 10.8% had a female householder with no husband present, and 43.5% were non-families. 39.8% of all households were made up of individuals and 17.4% had someone living alone who was 65 years of age or older. The average household size was 2.16 and the average family size was 2.88.
In the city the population was spread out with 24.0% under the age of 18, 6.7% from 18 to 24, 19.4% from 25 to 44, 25.7% from 45 to 64, and 24.2% who were 65 years of age or older. The median age was 45 years. For every 100 females there were 113.3 males. For every 100 females age 18 and over, there were 106.7 males.
The median income for a household in the city was $27,079, and the median income for a family was $35,786. Males had a median income of $28,750 versus $18,333 for females. The per capita income for the city was $16,618. About 8.1% of families and 14.8% of the population were below the poverty line, including 20.9% of those under age 18 and 12.4% of those age 65 or over.