Is Illinois higher than California in population?

No, California has a higher population (39.0M) compared to Illinois (12.6M).

What is the population of Illinois?

The population of Illinois is 12.6M.

The population of California is 39.0M.

Geography · US States & Territories Population

Population comparison — which one is higher?

Illinois has an estimated population of 12,582,032 (2023).

Population

12.6M

Higher

California has an estimated population of 39,029,342 (2023).

Population

39.0M

Winner

California

Difference

26.4M

Ratio

3.1x

Play the US States & Territories Population Higher Lower game and test your knowledge.