Cost of Living in Illinois 2026 — Housing, Income & Taxes

📊 Illinois at a Glance — 2026

Cost of Living Index

US average = 100 · Slightly Below Average

Median Household Income

$70,000

Source: U.S. Census Bureau ACS

Average 1BR Rent

$1,300/mo

Source: Zillow Observed Rent Index

State Income Tax

4.95%

Check official state rates

Average Home Price

$250,000

Source: Zillow Home Value Index

Salary Needed (30% rule)

$52,000

To keep housing under 30% of income

📈 Illinois vs the National Average

Cost of Living

Illinois runs 4% below the national average (index 96 vs. the U.S. baseline of 100). Illinois costs vary enormously by region — Chicago proper is expensive, but much of downstate Illinois is well below the national average. On the tax side, Illinois applies a flat income tax rate, but combined with some of the highest property taxes in the country.

💡 What Salary Do You Need in Illinois?

Using the 50/30/20 budget rule, housing should cost no more than 30% of your gross income. With average rent at $1,300/month in Illinois, you need roughly $52,000/year to live comfortably without being housing-cost-burdened.

Find out exactly how much you take home after Illinois taxes

💰 Calculate Illinois Take-Home Pay → 🏡 See How Much Home You Can Afford →

Is Illinois expensive to live in?

Illinois's cost of living index is 96, where 100 is the U.S. average — that's 4% below the national average. Illinois costs vary enormously by region — Chicago proper is expensive, but much of downstate Illinois is well below the national average. The biggest local industries are finance and trading (Chicago), manufacturing, and agriculture in the rest of the state, centered around Chicago.

What is the average rent in Illinois in 2026?

A 1-bedroom apartment in Illinois averages $1,300/month as of 2026 (Zillow Observed Rent Index). That's set against a median household income of $70,000/year, so rent alone runs roughly 22% of the typical household's pre-tax income.

What salary do you need to live in Illinois?

Following the standard 30%-of-income guideline for housing, you'd want roughly $52,000/year to cover Illinois's average rent comfortably. That's a general rule of thumb, not a hard rule — your real number depends on debt, family size, and where in Illinois you're looking. Our free paycheck calculator shows your actual take-home pay after Illinois taxes.

Does Illinois have a state income tax?

Illinois applies a flat income tax rate, but combined with some of the highest property taxes in the country. The listed rate is 4.95%. Use our free paycheck calculator to see exactly how that affects your specific take-home pay.

🔗 More Free Tools

💰 PayCalc Pro — See your take-home pay after Illinois taxes 🏡 HomeBuy Calc — How much home can you afford in Illinois? 📊 Compare All 50 States — Cost of Living by State 2026

Cost of Living in Illinois 2026 — Full Guide

Illinois's cost of living index sits at 96, meaning it runs 4% below the national average. Illinois costs vary enormously by region — Chicago proper is expensive, but much of downstate Illinois is well below the national average.

Illinois's Economy

Illinois's economy centers on finance and trading (Chicago), manufacturing, and agriculture in the rest of the state, with most of that activity concentrated around Chicago. That local economic base shapes everything from job availability to how quickly housing supply responds to demand — a state built around a few large employers behaves very differently, cost-wise, than one with a diversified metro economy.

Housing Costs in Illinois

The average rent for a 1-bedroom apartment in Illinois is approximately $1,300 per month in 2026. Average home values sit around $250,000. Illinois costs vary enormously by region — Chicago proper is expensive, but much of downstate Illinois is well below the national average.

Taxes in Illinois

Illinois applies a flat income tax rate, but combined with some of the highest property taxes in the country. The current listed rate is 4.95%. Combined with federal taxes, this determines your real take-home pay — use our free paycheck calculator to see the exact impact on your specific salary rather than relying on a statewide average.

Data Sources

Cost of living index data is based on the Council for Community and Economic Research (C2ER) methodology. Income figures are from the U.S. Census Bureau American Community Survey (ACS). Rent data is sourced from the Zillow Observed Rent Index. All figures represent approximations and should be verified with official sources for financial planning.

All data is for informational purposes only and is not financial or legal advice.

Cost of Living inIllinois 2026