Bradley is a town in Clark County, South Dakota, United States. The population was 72 at the 2010 census.
Bradley is located at 45°5′20″N 97°38′30″W (45.089009, -97.641753).
According to the United States Census Bureau, the town has a total area of 0.25 square miles (0.65 km2), all land.
Bradley has been assigned the ZIP code 57217, and the FIPS place code 06660.
Bradley, South Dakota is named after E.R. Bradley, who rescued a railroad chief engineer from a brawl in the town.
As of the census of 2010, there were 72 people, 32 households, and 23 families residing in the town. The population density was 288.0 inhabitants per square mile (111.2/km2). There were 53 housing units at an average density of 212.0 per square mile (81.9/km2). The racial makeup of the town was 100.0% White.
There were 32 households, of which 34.4% had children under the age of 18 living with them, 56.3% were married couples living together, 9.4% had a female householder with no husband present, 6.3% had a male householder with no wife present, and 28.1% were non-families. 21.9% of all households were made up of individuals, and 6.2% had someone living alone who was 65 years of age or older. The average household size was 2.25 and the average family size was 2.52.