City profile · Illinois · Census ACS 2023

Knollwood, IL

Population, income, housing, safety, climate and schools for Knollwood - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.

1,907
Residents
$133,452
Median income
$372,500
Median home
$1,781
Median rent (state)

Knollwood - the verdict

Out of every US city with 1,000+ residents, Knollwood places in the 91st percentile for household income. Source: Census ACS.

91st
percentile, household income
75th
percentile, home value
72nd
percentile, median rent
📝 How we sourced this

Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.

Data Snapshot: Knollwood, IL

Knollwood is a small town in Illinois, home to 1,907 residents per U.S. Census Bureau ACS 2023 estimates. Knollwood households earn a median of $133,452 annually, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 6.8%. Typical homes in Knollwood are valued around $372,500, and the median resident age is 36.9 years. 45.6% of adults here have a bachelor's degree or higher; 40.4% of working-age residents are in the labor force.

Illinois tracks close to the national cost-of-living baseline: BEA Regional Price Parities 2024 puts Illinois at 100.0 on a 100-equals-national-average scale (Near Average). A typical two-bedroom carries a HUD Fair Market Rent of $1,781 per month statewide. Statewide, average monthly utility bills in Illinois run around $240, per EIA 2023 residential energy data. Natural-hazard exposure scores 96.0 out of 100 on FEMA's National Risk Index (Very High).

Population

1,907 residents

Census ACS 2023 - Illinois

Median Household Income

$133,452 /yr

Poverty 6.8%

Cost of Living Index (state)

100.0 (US=100)

Near Average - BEA RPP 2024, Illinois average

How does Knollwood compare to other US cities?

Where Knollwood sits among all US cities (population 1,000+) on each measure, computed live from Census and FBI data.

Household income 91% higher than other cities
Home value 75% pricier than other cities
Median rent 72% pricier than other cities

"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

How we calculate these percentiles & ranks

Each percentile compares Knollwood against every qualifying US city; each in-state rank narrows that to Illinois only. Full formula and direction notes: methodology.

Illinois-relative analysis

Median Home Value is Knollwood's strongest outlier among Illinois cities

Among the 1,315 Illinois cities PlainCities tracks with reported median home value data, Knollwood ranks #79 - the 94th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Knollwood only against its own state's cities, not the full US field.

Median Household Income
#74 of 1,311
94th percentile in Illinois
Median Gross Rent
#17 of 1,336
77th percentile in Illinois
Median Home Value
#79 of 1,315
94th percentile in Illinois
Poverty Rate
#697 of 1,335
47th percentile in Illinois
Bachelor's Degree or Higher
#138 of 1,336
90th percentile in Illinois

Ranked by raw value (highest first); a higher rank is not automatically "better" for every measure, see each metric's own context above. This is a comparison within Illinois only, not a livability score. See the methodology for the source and calculation.

91stIncome percentile

91st percentile nationally for median household income. Source: Census ACS 2023 / FBI UCR 2023.

How Knollwood's home value compares nationally

Median home value vs. every US city (population 1,000+)

$372,500 25th percentile more affordable than 25% of 15,600 US cities

$0–$25,000: 5 US cities (0%). Below this entry. $25,000–$50,000: 54 US cities (0%). Below this entry. $50,000–$75,000: 352 US cities (2%). Below this entry. $75,000–$100,000: 1,086 US cities (7%). Below this entry. $100,000–$125,000: 1,516 US cities (10%). Below this entry. $125,000–$150,000: 1,170 US cities (8%). Below this entry. $150,000–$175,000: 1,278 US cities (8%). Below this entry. $175,000–$200,000: 1,229 US cities (8%). Below this entry. $200,000–$225,000: 1,035 US cities (7%). Below this entry. $225,000–$250,000: 976 US cities (6%). Below this entry. $250,000–$275,000: 754 US cities (5%). Below this entry. $275,000–$300,000: 712 US cities (5%). Below this entry. $300,000–$325,000: 521 US cities (3%). Below this entry. $325,000–$350,000: 526 US cities (3%). Below this entry. $350,000–$375,000: 465 US cities (3%). This entry sits in this band. $375,000–$400,000: 393 US cities (3%). Above this entry. $400,000–$425,000: 317 US cities (2%). Above this entry. $425,000–$450,000: 300 US cities (2%). Above this entry. $450,000–$475,000: 307 US cities (2%). Above this entry. $475,000–$500,000: 250 US cities (2%). Above this entry. $500,000–$525,000: 160 US cities (1%). Above this entry. $525,000–$550,000: 156 US cities (1%). Above this entry. $550,000–$575,000: 172 US cities (1%). Above this entry. $575,000–$600,000: 172 US cities (1%). Above this entry. $600,000–$625,000: 163 US cities (1%). Above this entry. $625,000–$650,000: 167 US cities (1%). Above this entry. $650,000–$675,000: 135 US cities (1%). Above this entry. $675,000–$700,000: 101 US cities (1%). Above this entry. $700,000–$725,000: 95 US cities (1%). Above this entry. $725,000–$750,000: 71 US cities (0%). Above this entry. $750,000–$775,000: 65 US cities (0%). Above this entry. $775,000–$800,000: 70 US cities (0%). Above this entry. $800,000–$825,000: 57 US cities (0%). Above this entry. $825,000–$850,000: 67 US cities (0%). Above this entry. $850,000–$875,000: 60 US cities (0%). Above this entry. $875,000–$900,000: 58 US cities (0%). Above this entry. $900,000–$925,000: 47 US cities (0%). Above this entry. $925,000–$950,000: 37 US cities (0%). Above this entry. $950,000–$975,000: 31 US cities (0%). Above this entry. $975,000–$1,000,000: 470 US cities (3%). Above this entry. $1,000,000–$1,025,000: 0 US cities (0%). Above this entry. Knollwood $0 $1,025,000 every US city, bucketed by value

Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau ACS 5-Year Estimates · 2023

Income distribution context

Household income distribution - Knollwood, IL Knollwood, IL's reported median household income shown against the U.S. national quintile-share pattern (not Knollwood, IL-specific quintile data). The Lorenz curve traces the national cumulative income share against cumulative population share, perfect equality is the diagonal; observed inequality bows below. $ Household Income Distribution Knollwood, IL median $133,452/yr, vs. U.S. national quintile pattern QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
Knollwood, IL's median household income (Census ACS 5-year estimate) plotted against the U.S. national income-quintile distribution pattern for context; the quintile shares and Lorenz curve are national figures, not computed specifically for Knollwood, IL. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 45.6%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 6.8%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 40.4%

Census ACS S2301, share of working-age residents in the labor force

Population
1,907
Median Income
$133,452
Median Home Value
$372,500
Median Age
36.9
Poverty Rate
6.8%
Labor force participation
40.4%
Bachelor's Degree+
45.6%

Commute Patterns

How workers travel to work, Census ACS 2023

Drive Alone
66.1%
Carpool
0.0%
Public Transit
0.0%
Walk
0.0%
Work from Home
29.3%
Other
4.6%

Based on 610 workers 16 and over.

Monthly Utility Costs

State-average estimates for Illinois - EIA 2023 residential energy data

Electricity
$100
avg/month
Natural Gas
$90
avg/month
Water & Sewer
$50
avg/month
Total Utilities
$240
estimated/month

Estimates reflect Illinois state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

Cost of living is a Illinois state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Knollwood sits in

Cost of Living Index
100.0
Near Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$1,781/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
96.0 / 100
Very High
FEMA NRI composite score (county)

Similar Cities in Illinois

Minonk
1,909 people
Jerome
1,910 people
Jonesboro
1,912 people
Sesser
1,919 people
Princeville
1,932 people
New Athens
1,937 people

Cities of a Similar Size Nationwide

Population-matched peers from other states, closest to Knollwood's 1,907 residents (Census ACS 5-Year 2023).

Munising, MI
1,907 people
Corralitos, CA
1,906 people
Pineville, KY
1,906 people
Ackerman, MS
1,906 people
Hamilton, MO
1,909 people
Durham, OR
1,909 people

Cities with a Similar Household Income Nationwide

Median-household-income-matched peers from other states, closest to Knollwood's $133,452 (Census ACS 5-Year 2023, table B19013).

Glastonbury Center, CT
$133,450 median income
Loma, CO
$133,456 median income
Red Feather Lakes, CO
$133,444 median income
Calhoun, LA
$133,476 median income
Ponderosa Park, CO
$133,425 median income
Bass Lake, OH
$133,482 median income

Race & Ethnicity Composition

Race and ethnicity - Knollwood, IL Race categories sum to one hundred percent per Census methodology. Hispanic or Latino is shown separately as an ethnicity overlay; it cuts across all race categories per OMB Directive 15. Race & Ethnicity Composition Knollwood, IL - Census ACS, OMB race + ethnicity categories RACE, sums to 100% 82.8% 6.1% 8.0% ETHNICITY, Hispanic or Latino (any race) 15.9% White 82.8% Black or African American 6.1% Asian 1.4% American Indian 0.0% Native Hawaiian 0.0% Some other race 1.7% Two or more races 8.0% Per OMB Directive 15: Hispanic/Latino ethnicity is reported separately from the race categories.
Race categories sum to 100%. Hispanic or Latino ethnicity is reported separately and cuts across race per Census/OMB methodology.

City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.

How Knollwood compares to nearby Illinois cities

Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).

City Population Median Household Income
Knollwood (this city) 1,907 $133,452
Minonk 1,909 $62,000
Jerome 1,910 $55,777
Jonesboro 1,912 $58,309
Census ACS 5-year FIPS IL OMB Bulletin 23-01

What do people ask about Knollwood, IL?

What is the population of Knollwood, IL? +

Knollwood, IL counts 1,907 residents according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in Knollwood, IL? +

In Knollwood, the typical household earns $133,452 per year, based on Census ACS 2023 data.

What is the cost of living in Knollwood? +

BEA does not publish a city-level cost-of-living figure for Knollwood; the closest available measure is the Illinois state average, a cost of living index of 100.0 (U.S. average = 100), rated "Near Average" based on BEA Regional Price Parities 2024 data. Costs within Illinois vary by metro area.

What is the median home value in Knollwood, IL? +

Homes in Knollwood carry a median value of $372,500, according to Census ACS 2023 estimates.

Source: U.S. Census Bureau ACS 5-Year 2023, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Read our methodology - how this data is sourced, computed, and verified.

Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.

Citation & verification links Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCities

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Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.