Income needed to buy a home
Grundy County, IL
$120,101
a year in household income to buy the typical Grundy County home with 10% down.
The monthly math
Typical home value$323,639
Down payment (10%)$32,364
Loan$291,275
Principal and interest (7.40%)$2,017/mo
Property tax (1.86% a year)$502/mo
Homeowners insurance (estimate)$162/mo
Mortgage insurance$121/mo
Total monthly cost$2,802/mo
Income needed keeps housing at 28% of gross income, the lender rule of thumb.
What locals earn
A stretch
The typical household here earns $92,235 a year, 77% of what it takes.
In Illinois
Grundy County ranks #95 of 102 for the income a home takes, from least to most.
Easiest to afford in Illinois
| County | Typical home | Income needed |
|---|---|---|
| Alexander County | $51,236 | $17,751 |
| Pulaski County | $74,037 | $25,267 |
| Scott County | $90,376 | $31,882 |
| Saline County | $88,425 | $32,129 |
| Gallatin County | $91,943 | $32,573 |
Typical home value from the Zillow Home Value Index, August 2026. Rate is the Freddie Mac 30-year average for Oct 8, 2026. Property tax rate is total taxes paid divided by total home value in the county (U.S. Census, ACS 2020-2024). How it works.