Cost of Living in Knox County, IL

Modeled annual cost: $43,601.

Median family income: $79,128.

Affordability Snapshot

IL County Median

$46,460

State Rank

97thMost expensive counties in IL out of 102See Illinois county rankings

Median Income

$79,128

Location Type

Not Metropolitan

Biggest category:

Transport is the biggest expense in Knox County, IL.

$12,240 per year.

Cost breakdown

Total

$43,601

Per year

  • Transport:$12,240
  • Taxes:$8,723
  • Housing:$7,836
  • Healthcare:$7,032
  • Food:$4,073
  • Other Costs:$3,697
  • Childcare:$0

* Percentages may not add up to 100% due to rounding.

Cheaper counties in Illinois

1Calhoun County, IL
$41,222
2Morgan County, IL
$42,968
3Rock Island County, IL
$43,203
4Randolph County, IL
$43,239
5Warren County, IL
$43,283

Popular comparisons in Illinois

See how Knox County, IL compares across the country.

Explore our cost of living interactive map to compare Knox County, IL with multiple counties in the United States.

Use the Cost of Living Map Launch WatchPennies cost of living map
How WatchPennies calculates salary needed
Cost of Living in Knox County, IL (2026)