South Dakota is about 1.4 times smaller than Ecuador.

Ecuador is approximately 283,561 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 69.31% the size of Ecuador. Meanwhile, the population of Ecuador is ~17.3 million people (16.5 million fewer people live in South Dakota).
This to-scale comparison of Ecuador vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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