District of Columbia vs Illinois Cost of Living
Purchasing power
Your $75,000 is worth different amounts in each state
$54,427
in District of Columbia
$78,947
in Illinois
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 | District of Columbia | Illinois | Difference |
|---|---|---|---|
| Housing | 204.7 | 84.3 | +143% |
| Groceries | 104.8 | 99.8 | +5% |
| Utilities | 103.3 | 99.0 | +4% |
| Transportation | 105.2 | 100.5 | +5% |
| Healthcare | 120.7 | 104.1 | +16% |
| Dining & Misc | 113.1 | 98.7 | +15% |
| Overall | 137.8 | 95.0 | +45% |
Index values relative to national average (100). Positive difference = more expensive in District of Columbia.
What things actually cost
| Item | District of Columbia | Illinois | Difference |
|---|---|---|---|
| Median home price | $640,000 | $260,000 | +$380,000 |
| Average 2BR rent | $2,866/mo | $1,180/mo | +$1,686 |
| Gas price | $3.56/gal | $3.60/gal | $0.04 |
| Electric bill | $150/mo | $108/mo | +$41 |
| Infant childcare | $28,356/yr | $16,107/yr | +$12,249 |
Salary equivalent: District of Columbia → Illinois
What a District of Columbia salary buys you in Illinois, adjusted for cost of living.
| Salary in District of Columbia | Equivalent in Illinois | Difference |
|---|---|---|
| $50,000 | $34,470 | +$15,530 |
| $75,000 | $51,705 | +$23,295 |
| $100,000 | $68,940 | +$31,060 |
| $150,000 | $103,411 | +$46,589 |
| $200,000 | $137,881 | +$62,119 |
Positive = your money goes further in Illinois. Based on overall COL index ratio.
Based on MERIC/C2ER 2025 composite indices. Dollar amounts from AAA, EIA, Zillow, and Child Care Aware.
Overview
District of Columbia is 45% more expensive than Illinois overall. District of Columbia has an index of 137.8 vs 95 for Illinois (national average = 100).
FAQ
Is it cheaper to live in District of Columbia or Illinois?
Illinois is cheaper to live in. District of Columbia is 45% more expensive overall. The biggest driver is housing — median home prices are $640,000 in District of Columbia vs $260,000 in Illinois.
Is Illinois cheaper than District of Columbia?
Yes, Illinois is 45% cheaper than District of Columbia overall based on the MERIC/C2ER cost-of-living index. Housing, groceries, and utilities all factor into the difference.
Is District of Columbia more expensive than Illinois?
Yes, District of Columbia is 45% more expensive than Illinois based on the MERIC/C2ER composite index. Housing is typically the largest factor in the difference.
What salary in Illinois equals $100,000 in District of Columbia?
To maintain the same purchasing power as a $100,000 salary in District of Columbia, you would need approximately $68,940 in Illinois. This is based on the overall cost-of-living index (137.8 vs 95).
How do housing costs compare between District of Columbia and Illinois?
Housing is significantly cheaper in Illinois. Median home prices are $640,000 in District of Columbia vs $260,000 in Illinois — a $380,000 difference. Average 2-bedroom rent is $2,866/mo vs $1,180/mo.
What costs more in District of Columbia vs Illinois?
Housing is 143% higher in District of Columbia (index 204.7 vs 84.3). Healthcare is 16% higher in District of Columbia (index 120.7 vs 104.1). Dining & Misc is 15% higher in District of Columbia (index 113.1 vs 98.7).
Is gas cheaper in District of Columbia or Illinois?
Gas averages $3.56/gallon in District of Columbia and $3.60/gallon in Illinois — a $0.04 difference per gallon.
District of Columbia vs Illinois cost of living — how do they compare?
District of Columbia has an overall cost-of-living index of 137.8 and Illinois has 95 (national average = 100). District of Columbia is 45% more expensive overall. Use the calculator above to see how this affects your specific salary.
How do taxes compare between District of Columbia and Illinois?
Cost of living is only part of the picture — state income taxes also affect your take-home pay. Use the District of Columbia vs Illinois 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
- District of Columbia Cost of Living — Housing, groceries, gas, and more
- Illinois Cost of Living — Housing, groceries, gas, and more
- District of Columbia vs Illinois Paycheck Comparison — Compare take-home pay after taxes
- House Affordability in District of Columbia — How much house can you afford?
- House Affordability in Illinois — 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.