Knollwood, IL Profile: Facts & Data

The Knollwood CDP⁽¹⁾ had a population of 2,089 as of July 1, 2024. Knollwood ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Knollwood is located at latitude 42.2861 and longitude -87.8856 in Lake County. The formal boundaries for the Knollwood Census Designated Place encompass a land area of 0.67 sq. miles and a water area of 0 sq. miles. Lake County is in the Central time zone (GMT -6).

The Knollwood Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Knollwood Census Designated Place is located within Township of Shields, a minor civil division (MCD) of Lake County.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Knollwood, IL Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	2,089 (100%)
Population in Households	1,998 (95.6%)
Population in Families	1,658 (79.4%)
Population in Group Quarters¹	91 ( 4.4%)
Population Density	3,454
Diversity Index²	73


INCOME
Median Household Income	$120,210
Average Household Income	$154,163
% of Income for Mortgage⁴	22%
Per Capita Income	$57,707
Wealth Index⁵	142
Socioeconomic Status Index⁶	Moderate (57.4)

HOUSING
Total HU (Housing Units)	833 (100%)
Owner Occupied HU	514 (61.7%)
Renter Occupied HU	267 (32.1%)
Vacant Housing Units	52 ( 6.2%)
Median Home Value	$412,048
Average Home Value	$424,319
Housing Affordability Index³	95

HOUSEHOLDS
Total Households	781
Average Household Size	2.56
Family Households	515
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Knollwood, IL - Peer Comparisons by Rank and Percentile

The table below compares Knollwood to the other 1,462 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	-0.36%	-0.89%
Households	-0.27%	-0.31%
Families		-0.59%
Median Household Income		2.22%
Per Capita Income		2.83%
Owner Occupied HU		1.03%

Variable Description	Rank	Percentile
Total Population	# 489	67th
Population Density	# 113	92nd
Median Household Income	# 91	94th
Housing Affordability Index	# 306	21st
Per Capita Income	# 122	92nd
Diversity Index	# 95	94th

Knollwood, IL Profile: Facts & Data

Knollwood, Illinois - Basic Facts

Knollwood, IL Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Knollwood, IL - Peer Comparisons by Rank and Percentile

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