Illinois vs Oklahoma Cost of Living
Purchasing power
Your $75,000 is worth different amounts in each state
$78,947
in Illinois
$88,548
in Oklahoma
Each cell = 1% of purchasing power. Green = value, red = gap.
Spending breakdown
Estimated annual spending on a $75,000 salary
What things actually cost
Real dollar costs side by side
Category breakdown
| Category | Illinois | Oklahoma | Difference |
|---|---|---|---|
| Housing | 84.3 | 68.8 | +23% |
| Groceries | 99.8 | 95.4 | +5% |
| Utilities | 99.0 | 98.2 | +1% |
| Transportation | 100.5 | 88.8 | +13% |
| Healthcare | 104.1 | 97.1 | +7% |
| Dining & Misc | 98.7 | 87.6 | +13% |
| Overall | 95.0 | 84.7 | +12% |
Index values relative to national average (100). Positive difference = more expensive in Illinois.
What things actually cost
| Item | Illinois | Oklahoma | Difference |
|---|---|---|---|
| Median home price | $260,000 | $190,000 | +$70,000 |
| Average 2BR rent | $1,180/mo | $963/mo | +$217 |
| Gas price | $3.60/gal | $3.01/gal | +$0.59 |
| Electric bill | $108/mo | $81/mo | +$28 |
| Infant childcare | $16,107/yr | $12,468/yr | +$3,639 |
Salary equivalent: Illinois → Oklahoma
What a Illinois salary buys you in Oklahoma, adjusted for cost of living.
| Salary in Illinois | Equivalent in Oklahoma | Difference |
|---|---|---|
| $50,000 | $44,579 | +$5,421 |
| $75,000 | $66,868 | +$8,132 |
| $100,000 | $89,158 | +$10,842 |
| $150,000 | $133,737 | +$16,263 |
| $200,000 | $178,316 | +$21,684 |
Positive = your money goes further in Oklahoma. Based on overall COL index ratio.
Based on MERIC/C2ER 2025 composite indices. Dollar amounts from AAA, EIA, Zillow, and Child Care Aware.
Overview
Illinois is 12% more expensive than Oklahoma overall. Illinois has an index of 95 vs 84.7 for Oklahoma (national average = 100).
FAQ
Is it cheaper to live in Illinois or Oklahoma?
Oklahoma is cheaper to live in. Illinois is 12% more expensive overall. The biggest driver is housing — median home prices are $260,000 in Illinois vs $190,000 in Oklahoma.
Is Oklahoma cheaper than Illinois?
Yes, Oklahoma is 12% cheaper than Illinois overall based on the MERIC/C2ER cost-of-living index. Housing, groceries, and utilities all factor into the difference.
Is Illinois more expensive than Oklahoma?
Yes, Illinois is 12% more expensive than Oklahoma based on the MERIC/C2ER composite index. Housing is typically the largest factor in the difference.
What salary in Oklahoma equals $100,000 in Illinois?
To maintain the same purchasing power as a $100,000 salary in Illinois, you would need approximately $89,158 in Oklahoma. This is based on the overall cost-of-living index (95 vs 84.7).
How do housing costs compare between Illinois and Oklahoma?
Housing is significantly cheaper in Oklahoma. Median home prices are $260,000 in Illinois vs $190,000 in Oklahoma — a $70,000 difference. Average 2-bedroom rent is $1,180/mo vs $963/mo.
What costs more in Illinois vs Oklahoma?
Housing is 23% higher in Illinois (index 84.3 vs 68.8). Transportation is 13% higher in Illinois (index 100.5 vs 88.8). Dining & Misc is 13% higher in Illinois (index 98.7 vs 87.6).
Is gas cheaper in Illinois or Oklahoma?
Gas averages $3.60/gallon in Illinois and $3.01/gallon in Oklahoma — a $0.59 difference per gallon.
Illinois vs Oklahoma cost of living — how do they compare?
Illinois has an overall cost-of-living index of 95 and Oklahoma has 84.7 (national average = 100). Illinois is 12% more expensive overall. Use the calculator above to see how this affects your specific salary.
How do taxes compare between Illinois and Oklahoma?
Cost of living is only part of the picture — state income taxes also affect your take-home pay. Use the Illinois vs Oklahoma paycheck comparison to see how a specific salary compares after federal and state taxes, FICA, and deductions.
Where does this cost of living data come from?
Cost-of-living indices are from the MERIC/C2ER 2025 Annual Average. Dollar amounts use AAA gas prices (March 2025), EIA electricity rates (2024), Child Care Aware childcare costs (2024), Zillow home values (2024-2025), and BEA Regional Price Parities.
Related tools
- Illinois Cost of Living — Housing, groceries, gas, and more
- Oklahoma Cost of Living — Housing, groceries, gas, and more
- Illinois vs Oklahoma Paycheck Comparison — Compare take-home pay after taxes
- House Affordability in Illinois — How much house can you afford?
- House Affordability in Oklahoma — How much house can you afford?
- Compare any two states
Based on MERIC/C2ER 2025 composite indices and publicly available price data. Cost of living varies significantly by metro area within a state. These are statewide averages.