State size comparison

compared to

South Dakota is about 1.4 times bigger than Iowa.

Iowa is approximately 144,701 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 36% larger than Iowa. Meanwhile, the population of Iowa is ~3.0 million people (2.2 million fewer people live in South Dakota).
Tip: This to-scale comparison of Iowa vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: South Dakota vs. Iowa
Flip Comparison · See true size
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Quality of Life Comparison · 10 statistics
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Cost of Living Comparison · 7 categories - 2026 data
Iowa is 15.7% more expensive than South Dakota
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