Lake Madison is a city located in South Dakota. Lake Madison has a 2020 population of 905. Lake Madison is currently declining at a rate of 0.00% annually and its population has increased by 32.50% since the most recent census, which recorded a population of 683 in 2010. Lake Madison reached it's highest population of 909 in 2016.
The average household income in Lake Madison is $121,892 with a poverty rate of 3.20%. The median rental costs in recent years comes to $739 per month, and the median house value is $302,500. The median age in Lake Madison is 61.1 years, 58.7 years for males, and 62 years for females. For every 100 females there are 160.1 males.