Glen Ullin, ND is a city located in Morton County, North Dakota and has a land area of 370.34 square miles (959.18 km2). The water area for the city is 2.71 square miles or 7.02 km2. There is one unique zip code in Glen Ullin, North Dakota and it is 58631. The area code(s) for Glen Ullin is 701.
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