Crystal Lake, IL

Average · 102

Illinois · Population 40,436 · Updated March 2026

$1,431
Median Rent / Month
$105,428
Median Income
$287,400
Median Home Value
$1,692
Owner Costs / Month

Affordability

How far your income goes in Crystal Lake

16.3%
Rent-to-Income Ratio
Affordable
Rent takes less than 25% of median income — considered affordable by HUD standards.

Tax Burden in Illinois

State-level tax rates that affect your costs

4.95%
Income Tax (Top Rate)
6.25%
Sales Tax
2.07%
Property Tax Rate

Estimated Annual Costs

$17,172
Annual Rent
$5,219
State Income Tax
$5,949
Property Tax (est.)

Cost of Living Overview

Crystal Lake has a cost of living close to the national average, offering a balanced mix of expenses and amenities. With a cost index of 102 (where 100 equals the national median), Crystal Lake residents can expect to pay median rent of $1,431/month while earning a median household income of $105,428/year.

The median home value in Crystal Lake, IL is $287,400, with typical monthly owner costs around $1,692 including mortgage, insurance, and taxes. The median rent-to-income ratio of 16.3% means housing is relatively affordable here — well below the 30% threshold that HUD considers cost-burdened.

Illinois has a moderate income tax rate of 4.95%. Combined with a 6.25% sales tax rate and 2.07% effective property tax rate, the overall tax environment is a factor in the total cost of living in Crystal Lake.

Frequently Asked Questions

Common questions about living costs in Crystal Lake

What is the cost of living in Crystal Lake, IL?
The cost of living index in Crystal Lake, IL is 102 (US average = 100). Median monthly rent is $1,431, median household income is $105,428/year, and the median home value is $287,400.
Is Crystal Lake, IL affordable?
No, Crystal Lake is more expensive than the national average with a cost index of 102. The rent-to-income ratio is 16.3%—below the 30%% threshold considered affordable by HUD.
What is the average rent in Crystal Lake, IL?
The median gross rent in Crystal Lake, IL is $1,431 per month according to the US Census Bureau ACS 2023 data. Annual rent costs approximately $17,172.
What is the median household income in Crystal Lake?
The median household income in Crystal Lake, IL is $105,428 per year. This compares to the national median of approximately $80,000.
What are the taxes like in Illinois?
Illinois has a top income tax rate of 4.95%, a sales tax of 6.25%, and an effective property tax rate of 2.07%.