State size comparison
compared to
Montana is about 1.9 times bigger than South Dakota.
South Dakota is approximately 196,540 sq km, while Montana is approximately 376,979 sq km, making Montana 92% larger than South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (175,235 more people live in Montana).
Tip:
This to-scale comparison of
South Dakota
vs.
Montana
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Montana vs. South Dakota
Flip Comparison · See true size
See Montana on top of South Dakota
→
Quality of Life Comparison · 12 statistics
Be 35.1% less likely to be unemployed in South Dakota
→
Cost of Living Comparison · 7 categories - 2026 data
South Dakota is 16.3% cheaper than Montana
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City Size Comparison · See true size
Compare the size of Los Angeles vs New York City
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