Ralston is a city in Carroll and Greene counties in the U.S. state of Iowa. The population was 81 at the time of the 2020 census. History Ralston was incorporated in 1900. It was named for William Chapman Ralston, a California banker. Geography Ralston is located at (42.041801, -94.630538). According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 79 people, 38 households, and 19 families living in the city. The population density was . There were 45 housing units at an average density of . The racial makeup of the city was 100.0% White. There were 38 households, of which 26.3% had children under the age of 18 living with them, 36.8% were married couples living together, 2.6% had a female householder with no husband present, 10.5% had a male householder with no wife present, and 50.0% were non-families. 47.4% of all households were made up of individuals, and 23.7% had someone living alone who was 65 years of age or older. The average household size was 2.08 and the average family size was 2.84. The median age in the city was 40.3 years. 25.3% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 29.2% were from 25 to 44; 24.1% were from 45 to 64; and 15.2% were 65 years of age or older. The gender makeup of the city was 48.1% male and 51.9% female. 2000 census As of the census of 2000, there were 98 people, 39 households, and 28 families living in the city. The population density was . There were 47 housing units at an average density of 23.8 per square mile (9.2/km). The racial makeup of the city was 100.00% White. There were 39 households, out of which 30.8% had children under the age of 18 living with them, 66.7% were married couples living together, 2.6% had a female householder with no husband present, and 28.2% were non-families. 25.6% of all households were made up of individuals, and 12.8% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.07. 24.5% are under the age of 18, 6.1% from 18 to 24, 27.6% from 25 to 44, 29.6% from 45 to 64, and