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Galesburg, IL

Cost of living in Knox County, IL

Estimated monthly cost
$2,596/mo
for a single person, all categories combined

Population 49,294 · Last updated May 21, 2026

Cost breakdown

Single person, by category, per month.

Rent $663 26%
Healthcare $480 18%
Federal tax $415 16%
Groceries $345 13%
Transport $320 12%
Energy $177 7%
State tax $146 6%
Water $50 2%

Rent in Knox County

Fair Market Rents by bedroom count.

Studio
$653
per month
1 bedroom
$663
per month
2 bedroom
$870
per month
3 bedroom
$1,130
per month
4 bedroom
$1,153
per month

Source: HUD FMR FY2025

Income and earnings in Knox County

Annual earnings figures from the Census ACS.

Household income
$53,291
per year
Individual earnings
$35,440
per year
Per capita
$29,614
per year

Source: ACS 2019-2023 5-Year.

Home values in Knox County

Average values reported by homeowners.

Average home value
$104,900
Annual property tax
$2,044

Source: ACS 2019-2023 5-Year

Energy costs in Knox County

Estimated monthly electricity and gas costs.

Electricity
$116
per month · 16.5¢/kWh
Natural gas
$61
per month
Annual total
$2,124
per year

Source: EIA

Healthcare in Knox County

Insurance premiums and coverage rates.

Individual premium
$480
per month
Family premium
$1,350
per month
Uninsured rate
5.5%

Source: ACS + national avg. Marketplace benchmark premiums are second-lowest Silver plan estimates and do not reflect employer plans, subsidies, or out-of-pocket costs. This is not healthcare advice.

Taxes in Knox County

State and local tax rates for Illinois.

State income tax
5.0%
Flat rate
State sales tax
6.3%
Combined sales tax
8.8%
incl. average local

Tax rates change. Consult a qualified tax professional for advice on your specific situation. This is not tax advice.

Transportation in Knox County

Commute patterns and estimated costs.

Average commute
20.6 min
Drive alone
80.5%
Public transit
0.5%
Work from home
5.7%

Source: ACS

Monthly cost estimates for Knox County

What it costs to live in Knox County each month.

Single person
$2,596
per month
  • Rent $663
  • Energy $177
  • Water $50
  • Groceries $345
  • Transport $320
  • Healthcare $480
  • Federal tax $415
  • State tax $146
Couple
$3,760
per month
  • Rent $870
  • Energy $212
  • Water $60
  • Groceries $572
  • Transport $420
  • Healthcare $864
  • Federal tax $542
  • State tax $220
Family
$6,165
per month
  • Rent $1,130
  • Energy $266
  • Water $70
  • Groceries $867
  • Transport $520
  • Healthcare $1,350
  • Childcare $1,200
  • Federal tax $542
  • State tax $220

Frequently asked questions about Knox County

Common questions about cost of living, rent and salary.

What is the average rent in Knox County?

In Knox County, IL, a one-bedroom apartment averages $663 per month, a two-bedroom averages $870 per month, a three-bedroom averages $1,130 per month, according to HUD Fair Market Rent data.

What is the average salary in Knox County?

In Knox County, IL, the average household income is $53,291 per year and individual earnings for full-time workers average $35,440 per year, according to U.S. Census Bureau data.

What is the cost of living in Knox County?

The estimated cost of living in Knox County, IL is approximately $2,596 per month for a single person, $3,760 for a couple, $6,165 for a family. This includes rent, utilities, groceries, transportation, healthcare, and taxes.

What is the sales tax rate in Knox County?

The combined sales tax rate in Knox County, IL is 8.82%, which includes the Illinois state rate of 6.25% plus an average local rate of 2.57%.

Is Knox County an affordable place to live?

Based on the data, a single person in Knox County, IL would need approximately $2,596 per month to cover rent, utilities, food, transport, healthcare, and taxes. The average household income is $53,291 per year ($4,441 per month). Knox County has a moderate cost of living relative to local earnings.

How much does healthcare cost in Knox County?

The ACA marketplace benchmark premium in Knox County, IL is approximately $480 per month for an individual. Approximately 5.5% of residents are uninsured. Actual costs vary based on employer coverage, plan type, and individual circumstances.

What are house prices in Knox County?

The average home value in Knox County, IL is $104,900, with average annual property taxes of $2,044, according to U.S. Census Bureau data.

How does Knox County compare to other areas?

You can compare Knox County, IL with any other US county using our comparison tool at /compare. Knox County is in the Galesburg, IL metro area.

Other counties in Illinois

Browse the full list of counties in Illinois, ranked by cost of living.

See all counties in Illinois

Compare Knox County with another area

Put two counties side by side to see how rent, taxes and everyday costs stack up.

About this data

All figures on this page come from official U.S. government sources, listed below.

  • HUD FMR FY2025
  • ACS 2019-2023 5-Year
  • EIA
  • ACS + national avg
  • ACS
  • USDA + BEA RPP
Methodology All data sources