What is the population of Knollwood CDP?

Knollwood CDP has 1,907 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #523 of 1,462 in Illinois.

What is the median household income in Knollwood CDP?

Median household income in Knollwood CDP is $133,452 a year, 69.9% above the national figure of $78,538.

How much does it cost to rent or buy in Knollwood CDP?

Median gross rent is $1,733 a month and the median home value is $372,500, so rent absorbs about 15.6% of median household income.

Is Knollwood CDP affordable compared with the rest of the US?

Homes cost about 2.8× the local median income here versus roughly 3.9× nationally, so Knollwood CDP is more affordable to buy in than the typical US market, and rent takes 15.6% of median income against the 30% cost-burden line.

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Illinois · Census place 40364

Knollwood, IL population, income and ZIP codes

Quick answer

The population of the city of Knollwood, Illinois (Knollwood, IL — Census place “Knollwood CDP”) is 1,907 residents, ranking #523 of 1462 places in Illinois. Median household income is $133,452, the median home is worth $372,500 and median gross rent runs $1,733 a month. Looking for the Knollwood Illinois ZIP code list? 1 ZIP codes serve Knollwood, IL: 60044.

Population: 1,907Knollwood CDP residents
Median household income: $133,452Past 12 months, inflation adjusted
Median home value: $372,500Owner-occupied units
Median gross rent: $1,733Rent plus utilities, monthly
Median age: 36.9 yrsAll residents
Homeownership rate: 76.8%Owner-occupied households

Knollwood ZIP codes (Illinois)

Census ZCTAs whose delivery area overlaps Knollwood.

The Knollwood IL ZIP code list below covers 1 ZIP code. Open any one for its population, income, housing and rent profile.

60044

What the numbers mean in Knollwood CDP

Housing cost measured against local earnings.

A household earning the Knollwood CDP median would spend about 15.6% of gross income on the median rent. The 30% mark is the federal threshold for cost burden, so anything above it signals a stretched rental market. The median home costs 2.8× the median household income; nationally that ratio sits near 4.5×. Poverty affects 8.8% of residents and 76.8% of households own their home.

Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year

Knollwood CDP, IL in context

How this area compares with national benchmarks.

Knollwood CDP is a small town in Illinois, with 1,907 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #523 of 1,462 ranked by population — larger than 64% of them. The median age here is 36.9 years against 39.1 nationally, a slightly younger profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Knollwood CDP earn a median of $133,452 a year, 69.9% above the national figure of $78,538 and 80% above the $74,244 median for the 698 Illinois cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 8.8% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Knollwood CDP is valued at $372,500, 22.8% above the national figure and 108% above the $179,100 peer median, while median gross rent runs $1,733 a month, 23.3% above the national figure, or roughly $20,796 across a full year. A household on the local median income would put about 15.6% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 2.8×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 76.8% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

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Frequently asked questions

Common questions about this area.

What is the population of Knollwood CDP?: Knollwood CDP has 1,907 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #523 of 1,462 in Illinois.
What is the median household income in Knollwood CDP?: Median household income in Knollwood CDP is $133,452 a year, 69.9% above the national figure of $78,538.
How much does it cost to rent or buy in Knollwood CDP?: Median gross rent is $1,733 a month and the median home value is $372,500, so rent absorbs about 15.6% of median household income.
Is Knollwood CDP affordable compared with the rest of the US?: Homes cost about 2.8× the local median income here versus roughly 3.9× nationally, so Knollwood CDP is more affordable to buy in than the typical US market, and rent takes 15.6% of median income against the 30% cost-burden line.
How current is this Knollwood CDP data?: All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.