State size comparison
Oregon is about 1.7 times bigger than Illinois.
Illinois is approximately 143,961 sq km, while Oregon is approximately 248,631 sq km, making Oregon 73% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (9.0 million fewer people live in Oregon).
This to-scale comparison of Illinois vs. Oregon uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.