Knollwood Flag

Knollwood

County:
Lake County
County Seat:
No
Area (mi²):
0.605
State:
Illinois

Knollwood is a CDP located in Lake County, Illinois. Knollwood has a 2026 population of 1,944. Knollwood is currently growing at a rate of 0.62% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Knollwood is $138,618 with a poverty rate of 7.83%. The median age in Knollwood is 36.4 years: 32.8 years for males, and 45.5 years for females. For every 100 females there are 94.4 males.

1.9K
Total Population
3,214
Density (mi²)
12 0.62%
Growth

Knollwood Population

Knollwood Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,944120.62%
20251,932130.68%

Median Age

Overall: 36.4 years
Female: 45.5 years
Male: 32.8 years

Knollwood Adults

There are 1,181 adults, (359 of whom are seniors) in Knollwood.

Sex Ratio

Female: 959 (51.4%)
Male: 905 (48.6%)

Demographics

The racial composition of Knollwood includes 80.36% White, 6.22% Black or African American, and smaller percentages for Asian, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,49880.36%
Two or more races20611.05%
Black or African American1166.22%
Asian331.77%
Other race110.59%
Race
Population ↓
Percentage (of total)
Two or more races20611.05%
White1337.14%
Other race110.59%
Race
Population ↓
Percentage (of total)
White1,36573.23%
Black or African American1166.22%
Asian331.77%

Knollwood Marital Status

Economics and Income Statistics

Knollwood 's average per capita income is $69,750. Household income levels show a median of $138,618. The poverty rate stands at 7.83%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$198,479-
Families$197,636$167,649
Households$138,618$144,329
Non Families$56,190$58,267

$69,750

Average Income

$138,618

Median Household Income

7.83%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)