State size comparison

compared to

Washington is around the same size as South Dakota.

South Dakota is approximately 196,540 sq km, while Washington is approximately 172,348 sq km, making Washington 87.69% the size of South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (5.9 million more people live in Washington).
This to-scale comparison of South Dakota vs. Washington uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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