In area, Perkins County is the second largest county in South Dakota with a total area of 2,891 square miles.
In population, Pennington County is the second largest county in South Dakota with a total population of 100,948 (2010 Census).
Rapid City is the second-largest city in the U.S. state of South Dakota.
Harding County
South Dakota is a state. The largest county by size (area) in South Dakota is Meade County. The largest county by population is Minnehaha County which contains the state's largest city, Sioux Falls.
There is no county in South Dakota named "Penning". There is a Pennington County in South Dakota that is bordered by the following counties:Meade County, South Dakota - northHaakon County, South Dakota - northeastJackson County, South Dakota - southeastShannon County, South Dakota - southCuster County, South Dakota - southwestWeston County, Wyoming - westLawrence County, South Dakota - northwest
Cass County, with a population of 149,778 in the 2010 US Census, is the most populated county in North Dakota. The largest city in North Dakota, Fargo, and the fifth largest city, West Fargo, are both located in Cass County.Cass County, North Dakota. With a population of 123,138.
Sioux Falls is South Dakota's largest city. The city has a population of about 171,000. It is located along the eastern border of South Dakota. It is the county seat of Minnehaha County, South Dakota.
It is the largest county by area at 3,482 square miles.
McKenzie county= has a total area of 2,861 square miles (7,410 km²), the largest county in North Dakota, of which, 2,742 square miles (7,102 km²) of it is land and 119 square miles (308 km²) of it (4.16%) is water.
The county seat of Duel County in South Dakota is Clear Lake, South Dakota.
Argintina
Agriculture, mining, oil and gas production, and manufacture of food products and farm implements are some of North Dakota's industries. Tourism is the second largest industry in North Dakota.
South Dakota is a state. The largest county by size (area) in South Dakota is Meade County. The largest county by population is Minnehaha County which contains the state's largest city, Sioux Falls.
In terms of population, Sioux Falls in the top city in South Dakota with Rapid City as the second largest city in South Dakota.