The median home price in Illinois is $265,000, 37% below the $420,000 national median. With a median household income of $72,200, the price-to-income ratio is 3.7x.
Property taxes in Illinois average 2.27% of assessed value, above the 1.1% national average. On the median home, that's $6,016 a year, or $501 added to the monthly payment.
Illinois levies a state income tax of 4.95% flat on top of the $1,993/month this mortgage runs. Model your real after-tax take-home before deciding how much payment you can carry.
Day-to-day expenses statewide track at 93 against the national 100 baseline, below average once you look past the mortgage payment itself.
Illinois's median home price runs 4% lower than Pennsylvania: $275,000 there versus $265,000 here.