State size comparison

compared to

Wyoming is about 1.3 times bigger than South Dakota.

South Dakota is approximately 196,540 sq km, while Wyoming is approximately 251,489 sq km, making Wyoming 28% larger than South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (250,554 fewer people live in Wyoming).
Tip: This to-scale comparison of South Dakota vs. Wyoming uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Wyoming vs. South Dakota

Flip Comparison · See true size
See Wyoming on top of South Dakota
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Quality of Life Comparison · 6 statistics
Be 33.3% less likely to be unemployed in South Dakota
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Cost of Living Comparison · 7 categories - 2026 data
South Dakota is 13.5% cheaper than Wyoming
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