Most affordable counties in Illinois
We ranked 17 Illinois counties that have at least 20 occupations published on this site. The ranking measures how many of those occupations pay enough, at the local median wage, to cover a one-bedroom rental, food, home energy and gasoline after federal, Social Security, Medicare and state taxes. Macoupin County, IL leads: 100% of its 36 occupations clear that bar, with a HUD one-bedroom Fair Market Rent of $748 a month.
Ties are broken by the lower one-bedroom rent, then by population. Where the Census Bureau publishes it, the table also shows median household income (American Community Survey 2020-2024) and what a year of one-bedroom rent equals as a share of it. Open a county to see every occupation and its take-home pay.