In 2021, Groton, SD had a population of 1.64k people with a median age of 34.3 and a median household income of $75,909. Between 2020 and 2021 the population of Groton, SD declined from 1,842 to 1,641, a −10.9% decrease and its median household income declined from $76,765 to $75,909, a −1.12% decrease.
The 5 largest ethnic groups in Groton, SD are White (Non-Hispanic) (96.6%), Two+ (Non-Hispanic) (1.65%), Other (Hispanic) (0.792%), Two+ (Hispanic) (0.488%), and White (Hispanic) (0.427%).
None of the households in Groton, SD reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
98.8% of the residents in Groton, SD are U.S. citizens.
In 2021, the median property value in Groton, SD was $139,900, and the homeownership rate was 73.8%.
Most people in Groton, SD drove alone to work, and the average commute time was 17.5 minutes. The average car ownership in Groton, SD was 2 cars per household.