State size comparison
Arizona is about 2 times bigger than Illinois.
Illinois is approximately 143,961 sq km, while Arizona is approximately 294,312 sq km, making Arizona 104% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (6.4 million fewer people live in Arizona).
This to-scale comparison of Illinois vs. Arizona uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.