Glen Ullin is located in southwestern North Dakota in Morton County on the banks of Big Muddy Creek about 50 miles west of Bismarck just south of I-94. The population estimate for July 1, 1998 was 867, a decrease of 60 since 1990.
Nearby recreation often times will involve watersports around Lake Tschida located about 20 miles south of town. In addition, the town offers golfers of all skill levels a chance to play Crossroads Golf Course. The 9-hole facility is about 3,050 yards long with a par of 36.