Roslyn is a city located in South Dakota. With a 2020 population of 170, it is the 192nd largest city in South Dakota and the 17149th largest city in the United States. Roslyn is currently declining at a rate of -0.58% annually and its population has decreased by -7.10% since the most recent census, which recorded a population of 183 in 2010. Roslyn reached it's highest population of 183 in 2010. Spanning over 0 miles, Roslyn has a population density of 865 people per square mile.
The average household income in Roslyn is $53,734 with a poverty rate of 3.27%. The median rental costs in recent years comes to $536 per month, and the median house value is $70,000. The median age in Roslyn is 55.1 years, 43.9 years for males, and 56.3 years for females. For every 100 females there are 96.1 males.