Japan is about 2.6 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Japan is approximately 377,915 sq km, making Japan 163% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (111.4 million more people live in Japan).
This to-scale comparison of Illinois vs. Japan uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

Share this