Lennox is a city located in South Dakota. With a 2020 population of 2,530, it is the 29th largest city in South Dakota and the 6783rd largest city in the United States. Lennox is currently growing at a rate of 1.89% annually and its population has increased by 19.85% since the most recent census, which recorded a population of 2,111 in 2010. Spanning over 2 miles, Lennox has a population density of 1,610 people per square mile.
The average household income in Lennox is $59,780 with a poverty rate of 8.79%. The median rental costs in recent years comes to $761 per month, and the median house value is $125,000. The median age in Lennox is 36.7 years, 32.6 years for males, and 41.2 years for females. For every 100 females there are 110.4 males.