Country size comparison

compared to

South Dakota is about 1.9 times smaller than Japan.

Japan is approximately 377,915 sq km, while South Dakota is approximately 196,540 sq km, making South Dakota 52.01% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (123.4 million fewer people live in South Dakota).
Tip: This to-scale comparison of Japan vs. South Dakota uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: South Dakota vs. Japan

Flip Comparison · See true size
See South Dakota on top of Japan
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Quality of Life Comparison · 2 statistics
Make 25.0% less money in Japan
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Cost of Living Comparison · 7 categories - 2026 data
Japan is 14.5% cheaper than South Dakota
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