Seneca is a town in Faulk County, South Dakota, United States. The population was 22 at the 2020 census.
History
A post office has been in operation at Seneca since 1886. Seneca was laid out in 1887. The town was named after Seneca Falls, New York.
Seneca is along U.S. Route 212.
Demographics
2010 census
As of the census of 2010, there were 38 people, 16 households, and 11 families residing in the town. The population density was . There were 29 housing units at an average density of . The racial makeup of the town was 97.4% White and 2.6% Asian. Hispanic or Latino of any race were 13.2% of the population.
There were 16 households, of which 31.3% had children under the age of 18 living with them, 68.8% were married couples living together, and 31.3% were non-families. 31.3% of all households were made up of individuals, and 18.8% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 3.00.
The median age in the town was 48 years. 23.7% of residents were under the age of 18; 2.6% were between the ages of 18 and 24; 13.1% were from 25 to 44; 39.5% were from 45 to 64; and 21.1% were 65 years of age or older. The gender makeup of the town was 52.6% male and 47.4% female.
2000 census
As of the census