Knollwood vs Round Lake Heights

A side-by-side comparison of Knollwood and Round Lake Heights: population, income, housing, and more.

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

Round Lake Heights has the higher population (2,585 vs 1,907 in Knollwood). Knollwood has the higher median household income ($133,452 vs $75,556 in Round Lake Heights). Knollwood has the higher median home value ($372,500 vs $196,100 in Round Lake Heights).

Population, income & housing

	Knollwood	Round Lake Heights
Population	1,907	2,585
Median age	36.9 yrs	29.6 yrs
Median household income	$133,452	$75,556
Median home value	$372,500	$196,100
Median gross rent	$1,733	$1,435
Housing units	778	850
Homeownership rate	76.8%	80.7%
Bachelor's degree or higher	45.6%	17.7%
Unemployment rate	0.0%	4.9%

Trends (ACS 5-year, 2019–2023)

	Knollwood	Round Lake Heights
Population	1,665 → 1,907 (+14.5%)	3,179 → 2,585 (-18.7%)
Median household income	$103,750 → $133,452 (+28.6%)	$78,950 → $75,556 (-4.3%)
Median home value	$324,100 → $372,500 (+14.9%)	$168,500 → $196,100 (+16.4%)
Median gross rent	$1,545 → $1,733 (+12.2%)	$1,470 → $1,435 (-2.4%)

Knollwood

Population

1,6651,907

Median household income

$103,750$133,452

Median home value

$324,100$372,500

Median gross rent

$1,545$1,733

Round Lake Heights

Population

3,1792,585

Median household income

$78,950$75,556

Median home value

$168,500$196,100

Median gross rent

$1,470$1,435

Age & race/ethnicity

Age distribution (share)

	Knollwood	Round Lake Heights
Under 5	6.9%	5.2%
5 to 17	29.9%	27.6%
18 to 24	1.6%	10.5%
25 to 34	7.2%	12.2%
35 to 44	9.8%	17.1%
45 to 54	18.3%	9.6%
55 to 64	5.8%	9.9%
65 to 74	12.3%	4.7%
75 and over	8.1%	3.2%

Race & ethnicity (share)

	Knollwood	Round Lake Heights
White (non-Hispanic)	75.6%	36.9%
Black or African American	6.1%	12.4%
American Indian & Alaska Native	0.0%	0.2%
Asian	1.4%	4.8%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.3%
Two or more races	1.0%	3.0%
Hispanic or Latino	15.9%	42.4%

Educational attainment (age 25+)

Share of adults 25+

	Knollwood	Round Lake Heights
No high school diploma	4.3%	18.6%
High school graduate	26.4%	38.0%
Some college or associate's	23.8%	25.6%
Bachelor's degree	32.5%	11.0%
Graduate or professional degree	13.0%	6.8%

Commute to work

How workers get to work (share)

	Knollwood	Round Lake Heights
Drove alone	66.1%	74.3%
Carpooled	0.0%	16.0%
Public transit	0.0%	0.5%
Walked	0.0%	1.0%
Bicycle	3.4%	0.0%
Worked from home	29.3%	8.0%
Other means	1.1%	0.2%

Housing

Units in structure (share)

	Knollwood	Round Lake Heights
1-unit, detached	86.4%	94.4%
1-unit, attached	5.1%	0.0%
2 to 4 units	0.0%	1.9%
5 to 19 units	4.0%	3.8%
20 or more units	3.3%	0.0%
Mobile home & other	1.2%	0.0%

Poverty & households

	Knollwood	Round Lake Heights
Poverty rate	8.8%	15.7%
Average household size	2.89	3.11
Mean commute (minutes)	23	35
Median year structure built	1970	1978