Mellette is a city located in South Dakota. With a 2020 population of 221, it is the 173rd largest city in South Dakota and the 16366th largest city in the United States. Mellette is currently growing at a rate of 0.91% annually and its population has increased by 5.24% since the most recent census, which recorded a population of 210 in 2010. Mellette reached it's highest population of 223 in 2012. Spanning over 0 miles, Mellette has a population density of 862 people per square mile.
The average household income in Mellette is $68,468 with a poverty rate of 5.32%. The median rental costs in recent years comes to $740 per month, and the median house value is $80,000. The median age in Mellette is 39.2 years, 40.9 years for males, and 32.9 years for females. For every 100 females there are 88.0 males.