Lemmon is a city located in South Dakota. With a 2020 population of 1,189, it is the 56th largest city in South Dakota and the 9621st largest city in the United States. Lemmon is currently declining at a rate of -0.08% annually and its population has decreased by -3.10% since the most recent census, which recorded a population of 1,227 in 2010. Lemmon reached it's highest population of 1,240 in 2012. Spanning over 1 miles, Lemmon has a population density of 1,148 people per square mile.
The average household income in Lemmon is $55,443 with a poverty rate of 20.79%. The median rental costs in recent years comes to $584 per month, and the median house value is $66,000. The median age in Lemmon is 49.6 years, 51.9 years for males, and 47.5 years for females. For every 100 females there are 82.8 males.