Turtle Lake is a city in McLean County, North Dakota, United States. The population was 542 at the 2020 census. Turtle Lake was founded in 1905.
A segment of the North Country National Scenic Trail is routed just to the north and east of Turtle Lake within the Brekken-Holmes Recreation Area. This trail segment can be hiked as a point-to-point hike or as a 9.2-mile loop hike from the ND Highway 41 trailhead parking area (map).
Geography and climate
According to the United States Census Bureau, the city has a total area of , of which is land and is water.