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CITY · 1990 CENSUS

Island Lake

Illinois · 4,470 residents · 3.349 sq mi
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The short version

Island Lake is significantly wealthier than the US average, with a median household income of $40,503. Population has fallen 45% since 2000, a loss of 3,683 residents. Median home value is $96,700. At a median age of 28.1, residents skew younger than the country as a whole. Poverty is rare here, at 2.5% of residents. Households here earn about 26% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $30,130
Younger
median age 28.1
US median: 33.0
Less educated
15% hold a bachelor's degree
US average: 20%
More affordable
home values down 12%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
4,470
−45%vs 2000
vs 8,153 in 2000
1990 – 2025
Median age
28.1
−13%vs 2000
vs 32.2 in 2000
US average: 33.0
Population, 1990 – 2024
4K5K6K8K9K1990201020202024Island Lake
20248K
1990201020202024
Age distribution, 1990
Under 511.7%(525)
US avg: 7.3%
5 to 99.9%(444)
US avg: 7.3%
10 to 146.9%(308)
US avg: 6.9%
15 to 194.1%(184)
US avg: 7.1%
20 to 246%(268)
US avg: 7.5%
25 to 3431%(1,386)
US avg: 17.5%
35 to 4415.1%(677)
US avg: 15.1%
45 to 547.3%(327)
US avg: 10.2%
55 to 643.4%(153)
US avg: 8.5%
65 to 742.3%(105)
US avg: 7.3%
75 to 841.8%(81)
US avg: 4%
85 and over0.3%(12)
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$40,503
−16%inflation adjusted, since 2000
vs $63,455 in 2000
US average: $30,130
1990 – 2024
Per capita income
$15,157
−37%vs 2000
vs $24,206 in 2000
US average: $14,340
Poverty rate
2.5%
−0.1 ptsvs 2000
vs 2.6% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$96,700
−12%inflation adjusted, since 2000
vs $145,400 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$534
−25%inflation adjusted, since 2000
vs $934 in 2000
US average: $450
Owner-occupied
87.9%
−3.5 ptsvs 2000
vs 91.4% in 2000
12.1% rent
RELATED:See current rent listings in Island Lake on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic88.7%(7,233)
Black0.5%(40)
Hispanic / Latino8.3%(679)
Asian1.6%(132)
Other0%
1990
White, non-Hispanic97.2%(4,345)
Black0.5%(23)
Hispanic / Latino4.3%(194)
Asian1.3%(56)
Other1%(46)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican15.4%(1,235)
Peruvian0.4%(36)
Cuban0.3%(25)
Spaniard0.1%(12)
Asian origin
Filipino1.2%(93)
Cambodian0.5%(42)
Chinese0.5%(37)
Japanese0.3%(21)
Ancestry
German26.9%(2,154)
Irish15.9%(1,278)
Italian10.3%(828)
Polish10.2%(820)
English7.3%(589)
Swedish3.1%(248)
American2.4%(192)
French2.3%(188)
Ukrainian2.3%(185)
Norwegian1.7%(133)
Czech1.5%(122)
Scottish0.9%(74)
+ 18 more ancestry groups with data
Russian0.7%(55)
Greek0.6%(51)
Romanian0.4%(34)
Scotch-Irish0.4%(31)
Slovak0.4%(31)
Welsh0.3%(27)
Danish0.3%(24)
Iranian0.3%(23)
Dutch0.2%(20)
Hungarian0.2%(18)
Croatian0.2%(14)
British0.1%(12)
Latvian0.1%(12)
Portuguese0.1%(11)
Lithuanian0.1%(10)
Serbian0.1%(9)
Brazilian0.1%(8)
RANKED:Largest German population · Largest Irish population · Largest Mexican population · Largest Italian population · Largest Polish population
Section 05

Education

Bachelor's degree or higher
14.7%
−8.8 ptsvs 2000
vs 23.6% in 2000
US average: 20.3%
High school or higher
85.6%
−4.0 ptsvs 2000
vs 89.6% in 2000
US average: 75.2%
Graduate degree
2.4%
−2.7 ptsvs 2000
vs 5.1% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
32.4 min
+12%vs 2000
vs 28.9 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)
Men 15+
Never married34.3%(1,116)
Married49.2%(1,601)
Widowed0.7%(23)
Divorced15.7%(511)
Women 15+
Never married27.1%(842)
Married53.8%(1,673)
Widowed4%(125)
Divorced15.2%(472)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

Places similar to Island Lake

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Pop 8,258
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Pop 7,688
McGregor
Pop 8,490
Miramar Beach
Pop 8,902
Places similar to Island Lake
Head to head

Compare Island Lake to nearby cities

ISLAND LAKE VS
Wauconda
Income$111,239+175%
Home value$278,600+188%
Population13,993+74%
SEE FULL COMPARISON →
ISLAND LAKE VS
Cary
Income$113,026+179%
Home value$309,800+220%
Population17,932+123%
SEE FULL COMPARISON →
ISLAND LAKE VS
McHenry
Income$86,315+113%
Home value$266,500+176%
Population29,217+263%
SEE FULL COMPARISON →
ISLAND LAKE VS
Round Lake
Income$111,977+176%
Home value$278,600+188%
Population18,526+130%
SEE FULL COMPARISON →
Frequently asked

How many people live in Island Lake, Illinois?

Island Lake, Illinois has about 4,470 residents according to the 1990 Census.

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

The typical household in Island Lake, Illinois earns about $40,503 a year. Half of households make more than that, and half make less.

Is Island Lake, Illinois expensive?

In Island Lake, Illinois, the median home is worth about $96,700, and the typical rent is about $534 a month.

How educated are people in Island Lake, Illinois?

About 14.7% of adults age 25 and over in Island Lake, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Island Lake, Illinois?

About 2.5% of people in Island Lake, Illinois live below the federal poverty line.

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

How we source and harmonize this data →