South Dakota is about 2.8 times bigger than Ireland.

Ireland is approximately 70,273 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 180% larger than Ireland. Meanwhile, the population of Ireland is ~5.3 million people (4.5 million fewer people live in South Dakota).
This to-scale comparison of Ireland vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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