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CITY

Crystal Lake

Illinois · 42,288 residents (2025 est.) · 18.985 sq mi
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The short version

Crystal Lake is significantly wealthier than the US average, with a median household income of $108,418. Population has held roughly steady since 2000. Median home value has more than doubled since 2000, reaching $311,400. It sits in the top 10% of US cities for household income. Households here earn about 30% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 39.3
US median: 38.9
More educated
42% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01

Population & growth

40,579
+7%since 2000
from 38,000 in 2000
1990 – 2025
2,137 / sq mi
+7%since 2000
from 2,002 / sq mi in 2000
US average: 281
39.3
+15%since 2000
from 34.1 in 2000
US average: 38.9

PEP 2025 EST:42,288 residents (Census Bureau Vintage 2025, released March 2026)

Population, 19902024
23K28K33K38K43K1990201020202024Crystal Lake
202441K
1990201020202024
Section 02

Income & economy

$108,418
−11%inflation adjusted, since 2000
from $66,872 in 2000
US average: $82,259
1990 – 2024
$46,472
+78%since 2000
from $26,146 in 2000
US average: $44,673
Households earning $100K+
67.4%
+18.1 ptssince 2009
from 49.3% in 2009
US average: 53.3%
6.8%
+3.3 ptssince 2000
from 3.5% in 2000
US average: 12.5%
0.377
+3%since 2010
from 0.364 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade12.9%
US avg: 9.9%
Information10.6%
US avg: 10.8%
Wholesale trade7.9%
US avg: 6.9%
Other services6.7%
US avg: 6.7%
Finance & insurance6.2%
US avg: 5.9%
Professional, scientific, technical5.4%
US avg: 5.1%
Public administration5.2%
US avg: 4.8%
Transportation & warehousing2.5%
US avg: 2.2%
Arts, entertainment, food2.3%
US avg: 1.9%
Education & health services0.8%
US avg: 0.9%
Agriculture, forestry, fishing0.5%
US avg: 1.6%
Construction0.4%
US avg: 1.2%
Manufacturing0%
US avg: 0.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

$311,400
+3%inflation adjusted, since 2000
from $165,700 in 2000
US average: $376,019
1990 – 2024
$1,468
−6%inflation adjusted, since 2000
from $855 in 2000
US average: $1,442
77.6%
−1.7 ptssince 2000
from 79.3% in 2000
22.4% rent
2.9%
−1.8 ptssince 2009
from 4.7% in 2009
US average: 10.0%
17.3%
−17.0 ptssince 2009
from 34.3% in 2009
US average: 22.9%
50.4%
+2.0 ptssince 2009
from 48.4% in 2009
US average: 47.4%
2.9
+16%since 2000
from 2.5 in 2000
1990 – 2024
RELATED:See current rent listings in Crystal Lake on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic89.6%(34,067)
Black0.5%(193)
Hispanic / Latino7%(2,662)
Asian1.9%(735)
Other0%
Diversity Score22%(8,368)
2024
White, non-Hispanic78.3%(31,776)
Black0.6%(250)
Hispanic / Latino13.8%(5,600)
Asian3.7%(1,515)
Other3.5%(1,438)
Diversity Score45.6%(18,518)
46
+107%since 2000
from 22 in 2000
1990 – 2024
Section 05

Education

42.0%
+5.8 ptssince 2000
from 36.2% in 2000
US average: 35.6%
High school or higher
93.3%
+1.8 ptssince 2000
from 91.5% in 2000
US average: 89.6%
13.8%
+2.9 ptssince 2000
from 10.9% in 2000
US average: 14.0%
Section 06

Commute & transportation

29.3 min
+17%since 2000
from 25.1 min in 2000
US average: 26.5
71.8%
−9.8 ptssince 2009
from 81.6% in 2009
US average: 68.9%
9.8%
+3.8 ptssince 2009
from 6.0% in 2009
US average: 8.5%
1.2%
−1.7 ptssince 2009
from 2.9% in 2009
US average: 3.2%
15.0%
+8.5 ptssince 2009
from 6.5% in 2009
US average: 15.0%
1.4%
−0.4 ptssince 2009
from 1.8% in 2009
US average: 2.4%
0.2%
Unchangedsince 2009
from 0.1% in 2009
US average: 0.4%
3.1%
−1.6 ptssince 2009
from 4.7% in 2009
US average: 8.3%
Section 07

Work & employment

4.2%
−3.7 ptssince 2011
from 7.9% in 2011
US average: 5.2%
71.6%
−0.7 ptssince 2011
from 72.2% in 2011
US average: 63.5%
14.4%
+3.6 ptssince 2009
from 10.8% in 2009
US average: 13.1%
42.0%
−22.2 ptssince 2009
from 64.1% in 2009
US average: 42.5%
Section 08

People & community

49.4%
−0.6 ptssince 2009
from 50.0% in 2009
50.6%
+0.6 ptssince 2009
from 50.0% in 2009
10.4%
Unchangedsince 2009
from 10.4% in 2009
US average: 14.1%
3.6%
−46.6 ptssince 2009
from 50.2% in 2009
US average: 6.2%
9.7%
+3.0 ptssince 2012
from 6.7% in 2012
US average: 13.3%
3.6%
−87.0 ptssince 2013
from 90.6% in 2013
US average: 8.4%
96.0%
+6.7 ptssince 2017
from 89.3% in 2017
US average: 91.0%
83.3%
−1.5 ptssince 2016
from 84.8% in 2016
US average: 77.7%
10.0%
−1.0 ptssince 2016
from 11.0% in 2016
US average: 13.6%
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Frequently asked

How many people live in Crystal Lake, Illinois?

Crystal Lake, Illinois has about 40,579 residents according to the 2024 American Community Survey.

What is the median household income in Crystal Lake, Illinois?

The typical household in Crystal Lake, Illinois earns about $108,418 a year. Half of households make more than that, and half make less.

Is Crystal Lake, Illinois expensive?

In Crystal Lake, Illinois, the median home is worth about $311,400, and the typical rent is about $1,468 a month.

How educated are people in Crystal Lake, Illinois?

About 42.0% of adults age 25 and over in Crystal Lake, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Crystal Lake, Illinois?

About 6.8% of people in Crystal Lake, Illinois live below the federal poverty line.

Has Crystal Lake, Illinois grown since 1990?

Yes, Crystal Lake, Illinois has grown since 1990. The population has added about 16,067 residents, a change of about 66 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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Crystal Lake, Illinois: demographics, income & housing data · CensusEasy