State size comparison
compared to
Illinois is about 2 times smaller than Arizona.
Arizona is approximately 294,312 sq km, while Illinois is approximately 143,961 sq km, making Illinois 48.91% the size of Arizona. Meanwhile, the population of Arizona is ~6.4 million people (6.4 million more people live in Illinois).
Compare further: Illinois vs. Arizona
Flip Comparison · See true size
See Illinois on top of Arizona
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Quality of Life Comparison · 9 statistics
Make 17.1% less money in Arizona
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Cost of Living Comparison · 7 categories - 2026 data
Arizona is 3.3% cheaper than Illinois
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City Size Comparison · See true size
Compare the size of Chicago vs Phoenix
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