Island Lake vs Marengo

A side-by-side comparison of Island Lake and Marengo: population, income, housing, and more.

Island Lake and Marengo are places in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Island Lake has the higher population (8,023 vs 7,123 in Marengo). Island Lake has the higher median household income ($98,125 vs $72,586 in Marengo). Island Lake has the higher median home value ($241,900 vs $206,100 in Marengo).

Population, income & housing

	Island Lake	Marengo
Population	8,023	7,123
Median age	39.5 yrs	33.3 yrs
Median household income	$98,125	$72,586
Median home value	$241,900	$206,100
Median gross rent	$1,855	$1,077
Housing units	3,045	2,898
Homeownership rate	81.7%	68.8%
Bachelor's degree or higher	27.6%	16.5%
Unemployment rate	6.7%	8.8%

Trends (ACS 5-year, 2019–2023)

	Island Lake	Marengo
Population	8,035 → 8,023 (-0.1%)	7,969 → 7,123 (-10.6%)
Median household income	$83,292 → $98,125 (+17.8%)	$63,694 → $72,586 (+14.0%)
Median home value	$171,100 → $241,900 (+41.4%)	$154,200 → $206,100 (+33.7%)
Median gross rent	$1,388 → $1,855 (+33.6%)	$912 → $1,077 (+18.1%)

Island Lake

Population

8,0358,023

Median household income

$83,292$98,125

Median home value

$171,100$241,900

Median gross rent

$1,388$1,855

Marengo

Population

7,9697,123

Median household income

$63,694$72,586

Median home value

$154,200$206,100

Median gross rent

$912$1,077

Age & race/ethnicity

Age distribution (share)

	Island Lake	Marengo
Under 5	7.2%	8.8%
5 to 17	14.9%	16.7%
18 to 24	8.6%	9.3%
25 to 34	12.4%	17.4%
35 to 44	13.4%	9.7%
45 to 54	14.7%	7.3%
55 to 64	15.4%	14.2%
65 to 74	10.1%	7.3%
75 and over	3.2%	9.3%

Race & ethnicity (share)

	Island Lake	Marengo
White (non-Hispanic)	74.0%	84.5%
Black or African American	0.3%	1.3%
American Indian & Alaska Native	0.1%	0.0%
Asian	2.7%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	1.9%	2.0%
Hispanic or Latino	21.0%	12.2%

Educational attainment (age 25+)

Share of adults 25+

	Island Lake	Marengo
No high school diploma	9.2%	8.0%
High school graduate	29.4%	39.5%
Some college or associate's	33.8%	36.0%
Bachelor's degree	20.9%	13.6%
Graduate or professional degree	6.7%	2.9%

Commute to work

How workers get to work (share)

	Island Lake	Marengo
Drove alone	76.3%	81.8%
Carpooled	9.9%	10.8%
Public transit	0.1%	0.0%
Walked	0.4%	0.9%
Bicycle	0.0%	0.4%
Worked from home	11.9%	6.1%
Other means	1.4%	0.0%

Housing

Units in structure (share)

	Island Lake	Marengo
1-unit, detached	74.1%	58.7%
1-unit, attached	21.5%	16.0%
2 to 4 units	0.3%	7.7%
5 to 19 units	2.6%	11.0%
20 or more units	0.8%	0.8%
Mobile home & other	0.8%	5.8%

Poverty & households

	Island Lake	Marengo
Poverty rate	6.5%	15.6%
Average household size	2.75	2.53
Mean commute (minutes)	32	28
Median year structure built	1989	1974