State size comparison
compared to
Kentucky is about 1.4 times smaller than Illinois.
Illinois is approximately 143,961 sq km, while Kentucky is approximately 102,896 sq km, making Kentucky 71.47% the size of Illinois. Meanwhile, the population of Illinois is ~12.8 million people (8.5 million fewer people live in Kentucky).
Compare further: Kentucky vs. Illinois
Flip Comparison · See true size
See Kentucky on top of Illinois
→
Quality of Life Comparison · 18 statistics
Make 41.0% more money in Illinois
→
Cost of Living Comparison · 7 categories - 2026 data
Illinois is 16.4% more expensive than Kentucky
→
Moving from Kentucky to Illinois · Cost, visas & climate
Compare cost of living, salary and climate.
→
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.