CostByState

Cost of Living in Illinois

How much does it cost to live in Illinois? This page pulls together the numbers that actually shape your budget — a flat 5.0% state income tax, a median home price of $294,136, and a median household income of $83,211. Every figure is cited and refreshed monthly, and the calculators below let you plug in your own salary and household to see what life in Illinois really costs you.

Key Illinois figures

State income tax

5.0%

Flat rate

Source: Illinois Department of Revenue via PolicyEngine US parameters · as of 2017-07-01 · methodology

Median home price

$294,136

Typical home value

Source: Zillow Research (ZHVI) · as of 2026-05 · methodology

Median household income

$83,211

$46,937 per capita

Source: US Census Bureau, ACS 1-Year 2024 · as of 2024 · methodology

Electricity price

20.47¢/kWh

Residential average

Source: US EIA, Electric Power Monthly (residential price) · as of 2026-04 · methodology

Population

12,710,158

US Census estimate

Illinois calculators

Living in Illinois: what the numbers say

Illinois charges a single flat 5.0% on state taxable income, so a nurse and a software director pay the same rate on each dollar. Flat systems are simple to predict, which makes budgeting straightforward, but they don't ease up on lower earners the way graduated brackets do.

Housing is where Illinois is won or lost. At a median home price of $294,136 against a median household income of $83,211, homes cost about 3.5× yearly income — within reach for many dual-income households. Use the home and rent calculators below to see what your income supports here.

Day-to-day costs add up too: residential electricity in Illinois runs about 20.47¢ per kilowatt-hour, one of the recurring bills the cost-of-living tools fold into a realistic monthly budget.

Frequently asked questions

Is Illinois an expensive state to live in?
It depends on your income and housing situation. Illinois has a flat 5.0% state income tax and a median home price of $294,136. The calculators on this page turn those figures into a number for your specific salary and household.
How much do you need to earn to live comfortably in Illinois?
That varies with household size, whether you rent or own, and your lifestyle. Start with the Illinois paycheck calculator to see your take-home pay, then the cost-of-living tools to compare it against local expenses.
Where do these Illinois numbers come from?
Tax figures come from state and IRS sources, home values from Zillow, income and population from the US Census, and energy prices from the EIA — each shown with its date. See our methodology page for the full list and update schedule.