In 2021, Lake Madison, SD had a population of 856 people with a median age of 60.9 and a median household income of $102,222. Between 2020 and 2021 the population of Lake Madison, SD grew from 811 to 856, a 5.55% increase and its median household income grew from $97,961 to $102,222, a 4.35% increase.
The 5 largest ethnic groups in Lake Madison, SD are White (Non-Hispanic) (92.6%), American Indian & Alaska Native (Non-Hispanic) (4.32%), Two+ (Non-Hispanic) (3.04%), White (Hispanic) (0%), and Black or African American (Non-Hispanic) (0%).
None of the households in Lake Madison, 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.
98.9% of the residents in Lake Madison, SD are U.S. citizens.
In 2021, the median property value in Lake Madison, SD was $439,000, and the homeownership rate was 85.4%.
Most people in Lake Madison, SD drove alone to work, and the average commute time was 29.2 minutes. The average car ownership in Lake Madison, SD was 2 cars per household.