Population
9,138 residents
Census ACS 2023 - Illinois
City profile · Illinois · Census ACS 2023
Population, income, housing, safety, climate and schools for Willowbrook - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.
Willowbrook - the verdict
Willowbrook ranks in the 76th percentile for household income and the 28th percentile for safety nationally, out of every US city with at least 1,000 residents. Source: Census ACS + FBI UCR.
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.
9,138 people live in Willowbrook, Illinois - a small town by U.S. Census Bureau ACS 2023 estimates. Willowbrook households earn a median of $97,861 annually, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 6.9%. Willowbrook's housing stock carries a median value of $367,000, and the median resident age is 46.3 years. About 54.1% of adults hold a bachelor's degree or higher, while 58.7% of working-age residents are in the labor force.
The Census Building Permit Survey recorded 7 residential units authorized here in 2024 (Slowing), down 12% from five years earlier. Crime here tracks close to the national norm: the FBI's Uniform Crime Reporting program logs 2160.1 total incidents per 100,000 residents here, near the national average (agency reporting is voluntary, so this measures reporting activity, not a definitive danger score).
Illinois tracks close to the national cost-of-living baseline: the state registers 100.0 on a 100-equals-national-average index (Near Average) per BEA Regional Price Parities 2024. Statewide, HUD pegs Fair Market Rent for a two-bedroom unit at $1,781 monthly. Statewide, average monthly utility bills in Illinois run around $240, per EIA 2023 residential energy data. On FEMA's National Risk Index, this area rates 97.6 out of 100 for natural-hazard exposure (Very High).
Population
9,138 residents
Census ACS 2023 - Illinois
Median Household Income
$97,861 /yr
Poverty 6.9%
Cost of Living Index (state)
100.0 (US=100)
Near Average - BEA RPP 2024, Illinois average
Here's how Willowbrook stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
Zoom in to just Illinois and the picture shifts: Willowbrook ranks #375 of 455 Illinois cities by lowest crime rate, a different read than the national percentile above.
Each percentile compares Willowbrook against every qualifying US city; each in-state rank narrows that to Illinois only. Full formula and direction notes: methodology.
Illinois-relative analysis
Among the 1,315 Illinois cities PlainCities tracks with reported median home value data, Willowbrook ranks #86 - the 93rd percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Willowbrook only against its own state's cities, not the full US field.
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.
76th percentile nationally for median household income · 28th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Income, affordability, and safety percentile
How Willowbrook's home value compares nationally
Median home value vs. every US city (population 1,000+)
$367,000 26th percentile more affordable than 26% of 15,600 US cities
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
Census ACS S1501, educational attainment
Census ACS S1701, poverty status
Census ACS S2301, share of working-age residents in the labor force
Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
| Year | Total |
|---|---|
| 2019 | 8 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 7 |
Permit volume decreased 12% from 2019 to 2024.
How workers travel to work, Census ACS 2023
Based on 4,628 workers 16 and over.
State-average estimates for Illinois - EIA 2023 residential energy data
Estimates reflect Illinois state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
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 Willowbrook sits in
Population-matched peers from other states, closest to Willowbrook's 9,138 residents (Census ACS 5-Year 2023).
Median-household-income-matched peers from other states, closest to Willowbrook's $97,861 (Census ACS 5-Year 2023, table B19013).
City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.
Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
| City | Population | Median Household Income |
|---|---|---|
| Willowbrook (this city) | 9,138 | $97,861 |
| Hawthorn Woods | 9,145 | $238,114 |
| Boulder Hill | 9,127 | $76,935 |
| Riverside | 9,079 | $149,219 |
Willowbrook, IL counts 9,138 residents according to U.S. Census Bureau ACS 2023 estimates.
In Willowbrook, the typical household earns $97,861 per year, based on Census ACS 2023 data.
BEA does not publish a city-level cost-of-living figure for Willowbrook; 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.
Willowbrook has a total crime rate of 2160.1 per 100,000 residents, which is near the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.
The median home value in Willowbrook is $367,000, according to Census ACS 2023 estimates.
Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census BPS 2024, 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.
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.