State size comparison

compared to

Wisconsin is about 1.4 times smaller than South Dakota.

South Dakota is approximately 196,540 sq km, while Wisconsin is approximately 140,663 sq km, making Wisconsin 71.57% the size of South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (4.9 million more people live in Wisconsin).
Tip: This to-scale comparison of South Dakota vs. Wisconsin uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Wisconsin vs. South Dakota
Flip Comparison · See true size
See Wisconsin on top of South Dakota
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Quality of Life Comparison · 11 statistics
Be 20.0% less likely to be unemployed in South Dakota
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Cost of Living Comparison · 7 categories - 2026 data
South Dakota is 12.2% cheaper than Wisconsin
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