De Smet is a city located in South Dakota. With a 2020 population of 1,049, it is the 62nd largest city in South Dakota and the 10108th largest city in the United States. De Smet is currently declining at a rate of -0.47% annually and its population has decreased by -3.67% since the most recent census, which recorded a population of 1,089 in 2010. De Smet reached it's highest population of 1,112 in 2012. Spanning over 1 miles, De Smet has a population density of 906 people per square mile.
The average household income in De Smet is $60,210 with a poverty rate of 12.31%. The median rental costs in recent years comes to $380 per month, and the median house value is $102,000. The median age in De Smet is 44.8 years, 40.9 years for males, and 52 years for females. For every 100 females there are 101.6 males.