Which Is Larger: North Dakota or South Dakota?

South Dakota is larger.

• South Dakota: 77,116 sq mi (199,729 km²) – 16th largest state.
• North Dakota: 70,762 sq mi (183,273 km²) – 19th largest state.

Difference: ~6,354 sq mi (South Dakota ~9% bigger). Both are sparsely populated (~900k each).