South Dakota is about 273 times bigger than Singapore.

Singapore is approximately 719 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 27,228% larger than Singapore. Meanwhile, the population of Singapore is ~6.1 million people (5.2 million fewer people live in South Dakota).
Tip: This to-scale comparison of Singapore vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles.
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