The Postal Code abbreviations are: Minnesota= MN Montana= MT South Dakota= SD Other abbreviations include: Minnesota = Minn. Montana = Mont. South Dakota = So.Dak., S.D., S. Dak.
Idaho, Maryland, North Dakota, South Dakota
South Dakota has had several abbreviations before SD became the postal abbreviation. S. Dak. So. Dak. Sodak S. D.
The standard two letter abbreviation for the state of North Dakota is ND.
It is an analogy. North Carolina is to South Carolina as North Dakota is to South Dakota.
North Dakota is north of South Dakota.
The US state of North Dakota is north of South Dakota.
North Dakota is up by the border of Canada, Wyoming is just next to South Dakota.
Saskatchewan and Manitoba, Canada are to the north of North Dakota and North Dakota is to the north of South Dakota.
The US state of South Dakota is south of the US state of North Dakota.
North Dakota South Dakota North Carolina South Carolina
The state of North Dakota is north (or above) the state of South Dakota.