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Chicago-Naperville-Elgin, IL-IN

Cost of living in Grundy County, IL

Part of the Chicago Metro Area

Estimated monthly cost
$3,365/mo
for a single person, all categories combined

Population 52,920 · Last updated May 21, 2026

Cost breakdown

Single person, by category, per month.

Rent $1,151 34%
Federal tax $639 19%
Healthcare $480 14%
Groceries $345 10%
Transport $320 10%
State tax $203 6%
Energy $177 5%
Water $50 1%

Rent in Grundy County

Fair Market Rents by bedroom count.

Studio
$1,045
per month
1 bedroom
$1,151
per month
2 bedroom
$1,510
per month
3 bedroom
$1,999
per month
4 bedroom
$2,006
per month

Source: HUD FMR FY2025

Income and earnings in Grundy County

Annual earnings figures from the Census ACS.

Household income
$93,060
per year
Individual earnings
$49,099
per year
Per capita
$43,744
per year

Source: ACS 2019-2023 5-Year.

Home values in Grundy County

Average values reported by homeowners.

Average home value
$259,200
Annual property tax
$5,260

Source: ACS 2019-2023 5-Year

Energy costs in Grundy 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 Grundy County

Insurance premiums and coverage rates.

Individual premium
$480
per month
Family premium
$1,350
per month
Uninsured rate
3.7%

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 Grundy 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 Grundy County

Commute patterns and estimated costs.

Average commute
27.6 min
Drive alone
83.8%
Public transit
0.6%
Work from home
9.7%

Source: ACS

Monthly cost estimates for Grundy County

What it costs to live in Grundy County each month.

Single person
$3,365
per month
  • Rent $1,151
  • Energy $177
  • Water $50
  • Groceries $345
  • Transport $320
  • Healthcare $480
  • Federal tax $639
  • State tax $203
Couple
$5,215
per month
  • Rent $1,510
  • Energy $212
  • Water $60
  • Groceries $572
  • Transport $420
  • Healthcare $864
  • Federal tax $1,193
  • State tax $384
Family
$7,849
per month
  • Rent $1,999
  • Energy $266
  • Water $70
  • Groceries $867
  • Transport $520
  • Healthcare $1,350
  • Childcare $1,200
  • Federal tax $1,193
  • State tax $384

Frequently asked questions about Grundy County

Common questions about cost of living, rent and salary.

What is the average rent in Grundy County?

In Grundy County, IL, a one-bedroom apartment averages $1,151 per month, a two-bedroom averages $1,510 per month, a three-bedroom averages $1,999 per month, according to HUD Fair Market Rent data.

What is the average salary in Grundy County?

In Grundy County, IL, the average household income is $93,060 per year and individual earnings for full-time workers average $49,099 per year, according to U.S. Census Bureau data.

What is the cost of living in Grundy County?

The estimated cost of living in Grundy County, IL is approximately $3,365 per month for a single person, $5,215 for a couple, $7,849 for a family. This includes rent, utilities, groceries, transportation, healthcare, and taxes.

What is the sales tax rate in Grundy County?

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

Is Grundy County an affordable place to live?

Based on the data, a single person in Grundy County, IL would need approximately $3,365 per month to cover rent, utilities, food, transport, healthcare, and taxes. The average household income is $93,060 per year ($7,755 per month). Grundy County is relatively affordable compared to the national average.

How much does healthcare cost in Grundy County?

The ACA marketplace benchmark premium in Grundy County, IL is approximately $480 per month for an individual. Approximately 3.7% of residents are uninsured. Actual costs vary based on employer coverage, plan type, and individual circumstances.

What are house prices in Grundy County?

The average home value in Grundy County, IL is $259,200, with average annual property taxes of $5,260, according to U.S. Census Bureau data.

How does Grundy County compare to other areas?

You can compare Grundy County, IL with any other US county using our comparison tool at /compare. Grundy County is in the Chicago-Naperville-Elgin, IL-IN 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 Grundy 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