Glen Ullin is a city located in Morton County North Dakota. With a 2020 population of 715, it is the 75th largest city in North Dakota and the 11790th largest city in the United States . Glen Ullin is currently declining at a rate of -0.14% annually and its population has decreased by -11.40% since the most recent census, which recorded a population of 807 in 2010. Glen Ullin reached it's highest population of 808 in 2010. Spanning over 1 miles, Glen Ullin has a population density of 702 people per square mile.
The average household income in Glen Ullin is $51,663 with a poverty rate of 18.50%. The median rental costs in recent years comes to $818 per month, and the median house value is $104,400. The median age in Glen Ullin is 50.7 years, 43.9 years for males, and 55.5 years for females.