Quick answer
Kentucky has lower average 1BR rent ($1,090/mo vs $1,850/mo). State income tax: Kentucky (4.5%) vs Illinois (4.95%) — on a $120K salary that's $540/year difference.
State Comparison · 2026
Illinois vs Kentucky
Side-by-side on state income tax, rent, home prices, climate, and top metros — with specific dollar numbers for every claim.
Last updated: April 23, 2026
Illinois vs Kentucky at a Glance
| Metric | Illinois | Kentucky |
|---|---|---|
| Avg 1BR rent (major metros) | $1,850 | $1,090 ✓ |
| Avg median home price | $340K | $260K ✓ |
| Cheapest city | Chicago ($1,850) | Louisville ($1,080) ✓ |
| Priciest city | Chicago ($1,850) | Lexington ($1,100) |
| State income tax | 4.95% | 4.5% ✓ |
| Avg walkability | 78/100 ✓ | 37/100 |
| Cities tracked | 1 | 2 |
✓ marks the lower or more favorable value. Averages use the major metros we track in each state.
State Income Tax: Real Savings
What the rate gap actually looks like in your paycheck. Lower rate: Kentucky (4.5%).
Salary $80K
$360
/year saved in Kentucky
Salary $120K
$540
/year saved in Kentucky
Salary $200K
$900
/year saved in Kentucky
Calculation uses the effective state rate difference × gross salary. Doesn't include property tax, sales tax, or federal impact.
Deep Dive: Each State
Illinois (IL)
Tax reality
Illinois has a flat 4.95% state income tax (moderate) — but property taxes are among the highest in the US, averaging 2.1% effective. On a $350K Chicago home that's $7,400/year. Combined tax burden is higher than it looks. The state's pension underfunding creates long-term fiscal risk for homeowners.
Top cities (1 tracked)
Top drawbacks
- ✕Property tax is brutal — Cook County averages 2.3% effective. On a $500K home, that's $11,500/year. Homeowners feel this every month.
- ✕Chicago winters are genuinely cold. Lake-effect snow, mid-December through March subzero streaks, and winds off Lake Michigan can make it feel -20°F. This is the biggest filter for people considering moving here.
- ✕The state fiscal situation (pension debt, budget pressures) drives ongoing policy uncertainty — property tax, sales tax, and various fees continue to drift upward.
Kentucky (KY)
Tax reality
Kentucky has a flat 4% state income tax (being phased down to 3.5% and lower over time). Property tax is low (~0.83% effective). Sales tax 6%. No estate tax. Favorable tax environment.
Top cities (2 tracked)
Top drawbacks
- ✕Kentucky ranks in the bottom half of US states on most health metrics — obesity, smoking, opioid use, chronic disease. Healthcare exists in the metros but public health is weaker than average.
- ✕Rural Kentucky has significant economic distress from coal industry decline and opioid crisis aftermath. This affects the state's political climate and services.
- ✕Louisville has real public safety concerns in specific west-end neighborhoods. Most of east Louisville, the Highlands, and the core downtown/NuLu areas are generally fine.
Frequently Asked Questions
Is Illinois or Kentucky cheaper to live in?
Kentucky has lower average 1BR rent across major metros — $1,090/mo vs $1,850/mo in Illinois, a $760/mo difference. Home prices: Kentucky median is $260K vs $340K.
Illinois vs Kentucky: which has lower state income tax?
Kentucky has lower state income tax (4.5%) vs 4.95% in Illinois. On an $80K salary that's $360/year in savings. On $200K, savings grow to $900/year.
Should I move from Illinois to Kentucky?
Illinois has a flat 4.95% state income tax (moderate) — but property taxes are among the highest in the US, averaging 2.1% effective. On a $350K Chicago home that's $7,400/year. Combined tax burden is higher than it looks. The state's pension underfunding creates long-term fiscal risk for homeowners.
What are the best cities in Illinois vs Kentucky?
Illinois's largest metros include Chicago. Kentucky's largest metros include Louisville, Lexington. Cost of living varies significantly within each state — a Illinois suburb can be 40% cheaper than its flagship city, and vice versa.