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A comprehensive side-by-side comparison of cost of living, wages, taxes, and housing between Illinois and California. Updated for 2026.
Illinois is 48.8% cheaper to live in than California. However, California has a higher median household income ($87,200 vs $72,205). Average rent for a 1-bedroom is $1,050/mo in Illinois vs $1,850/mo in California.
93.4
Illinois
142.2
California
$15
Illinois
$16.9
California
$72,205
Illinois
$87,200
California
$1,050
Illinois
$1,850
California
6.25%
Illinois
7.25%
California