Iowa is bordered by South Dakota to the northwest.
Iowa is bordered by South Dakota to the northwest.
It is 521 miles according to Google Maps.
North Dakota, South Dakota, Iowa, Wisconsin
429 miles.
According to Mapquest, the shortest distance between these two cities is about 532.3 miles.
the Big Sioux is used to define the boundary between South Dakota and Iowa.
Wisconsin, Iowa, South Dakota, and North Dakota
The postal abbreviations are: South Dakota: SD North Dakota: ND Iowa: IA
From South Dakota to the Canadian border only requires passing through North Dakota (about 200 miles). To drive from South Dakota to Indiana, you would have to drive through Minnesota, Wisconsin or Iowa, and Illinois (about 500 miles).
South Dakota is closer.
South Dakota