South Dakota is about 1.5 times bigger than Alabama.

Alabama is approximately 131,426 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 50% larger than Alabama. Meanwhile, the population of Alabama is ~4.8 million people (4.0 million fewer people live in South Dakota).
This to-scale comparison of Alabama vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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