Island Lake vs Johnsburg

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

Island Lake and Johnsburg 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 6,374 in Johnsburg). Johnsburg has the higher median household income ($106,827 vs $98,125 in Island Lake). Johnsburg has the higher median home value ($312,200 vs $241,900 in Island Lake).

Population, income & housing

	Island Lake	Johnsburg
Population	8,023	6,374
Median age	39.5 yrs	41.3 yrs
Median household income	$98,125	$106,827
Median home value	$241,900	$312,200
Median gross rent	$1,855	$1,330
Housing units	3,045	2,631
Homeownership rate	81.7%	88.4%
Bachelor's degree or higher	27.6%	30.6%
Unemployment rate	6.7%	2.2%

Trends (ACS 5-year, 2019–2023)

	Island Lake	Johnsburg
Population	8,035 → 8,023 (-0.1%)	6,384 → 6,374 (-0.2%)
Median household income	$83,292 → $98,125 (+17.8%)	$117,684 → $106,827 (-9.2%)
Median home value	$171,100 → $241,900 (+41.4%)	$277,500 → $312,200 (+12.5%)
Median gross rent	$1,388 → $1,855 (+33.6%)	$1,410 → $1,330 (-5.7%)

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

Johnsburg

Population

6,3846,374

Median household income

$117,684$106,827

Median home value

$277,500$312,200

Median gross rent

$1,410$1,330

Age & race/ethnicity

Age distribution (share)

	Island Lake	Johnsburg
Under 5	7.2%	6.7%
5 to 17	14.9%	16.6%
18 to 24	8.6%	7.0%
25 to 34	12.4%	12.2%
35 to 44	13.4%	10.5%
45 to 54	14.7%	12.8%
55 to 64	15.4%	16.6%
65 to 74	10.1%	11.5%
75 and over	3.2%	6.2%

Race & ethnicity (share)

	Island Lake	Johnsburg
White (non-Hispanic)	74.0%	86.7%
Black or African American	0.3%	1.2%
American Indian & Alaska Native	0.1%	0.0%
Asian	2.7%	1.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.7%
Two or more races	1.9%	3.3%
Hispanic or Latino	21.0%	7.2%

Educational attainment (age 25+)

Share of adults 25+

	Island Lake	Johnsburg
No high school diploma	9.2%	3.9%
High school graduate	29.4%	31.6%
Some college or associate's	33.8%	33.8%
Bachelor's degree	20.9%	18.8%
Graduate or professional degree	6.7%	11.8%

Commute to work

How workers get to work (share)

	Island Lake	Johnsburg
Drove alone	76.3%	82.4%
Carpooled	9.9%	6.4%
Public transit	0.1%	1.0%
Walked	0.4%	0.0%
Bicycle	0.0%	0.0%
Worked from home	11.9%	10.2%
Other means	1.4%	0.0%

Housing

Units in structure (share)

	Island Lake	Johnsburg
1-unit, detached	74.1%	90.2%
1-unit, attached	21.5%	6.7%
2 to 4 units	0.3%	1.4%
5 to 19 units	2.6%	1.4%
20 or more units	0.8%	0.4%
Mobile home & other	0.8%	0.0%

Poverty & households

	Island Lake	Johnsburg
Poverty rate	6.5%	11.9%
Average household size	2.75	2.71
Mean commute (minutes)	32	29
Median year structure built	1989	1986