Illinois is about 1.5 times smaller than Guyana.

Guyana is approximately 214,969 sq km, while Illinois is approximately 143,961 sq km, making Illinois 66.97% the size of Guyana. Meanwhile, the population of Guyana is ~789,683 people (12.0 million more people live in Illinois).
This to-scale comparison of Guyana vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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