State size comparison
compared to
Oklahoma is about 1.2 times bigger than Illinois.
Illinois is approximately 143,961 sq km, while Oklahoma is approximately 177,847 sq km, making Oklahoma 24% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (9.1 million fewer people live in Oklahoma).
This to-scale comparison of
Illinois
vs.
Oklahoma
uses the Mercator projection, which distorts the size of regions near the poles. Learn more.
Note: Try dragging the outline to reposition.
