De Smet is a city located in Idaho. De Smet has a 2020 population of 163. De Smet is currently declining at a rate of 0.00% annually and its population has decreased by -6.86% since the most recent census, which recorded a population of 175 in 2010. De Smet reached it's highest population of 222 in 2011.
The average household income in De Smet is $29,556 with a poverty rate of 66.87%. The median rental costs in recent years comes to $371 per month, and the median house value is $71,700. The median age in De Smet is 26.8 years, 24.9 years for males, and 29.9 years for females. For every 100 females there are 59.8 males.