Turtle Lake is a city located in McLean County North Dakota. With a 2020 population of 538, it is the 91st largest city in North Dakota and the 13009th largest city in the United States . Turtle Lake is currently declining at a rate of -1.47% annually and its population has decreased by -7.40% since the most recent census, which recorded a population of 581 in 2010. Turtle Lake reached it's highest population of 595 in 2012. Spanning over 1 miles, Turtle Lake has a population density of 1,051 people per square mile.
The average household income in Turtle Lake is $53,130 with a poverty rate of 15.49%. The median rental costs in recent years comes to $730 per month, and the median house value is $103,500. The median age in Turtle Lake is 50 years, 43.5 years for males, and 53.6 years for females.