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Brunei is approximately 5,765 sq km, while Illinois is approximately 143,961 sq km, making Illinois 2,397% larger than Brunei. Meanwhile, the population of Brunei is ~464,478 people (12.4 million more people live in Illinois).
Size of Illinois vs. France
Size of Illinois vs. Italy
Size of Illinois vs. Austria
Size of Illinois vs. United Kingdom
Size of Illinois vs. Egypt
Size of Illinois vs. Ecuador
Size of Illinois (US) vs. California (US)
Size of Illinois (US) vs. Massachusetts (US)
Size of Illinois (US) vs. Washington (US)
Size of Illinois (US) vs. Virginia (US)
Size of Illinois (US) vs. New Jersey (US)
Size of Illinois (US) vs. Indiana (US)