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Place dossier plate
SheetIL-OAK-BROOK-IL · Oak Brook, IL 8,028 pop · income 96th pct
Instrument codes from this place’s ACS population and household income, BEA state COL, FBI safety, national income percentile, photo-finish peer city, home-value band, and matched Census-tract book - not a moving recommendation.
Income neighbourhood around Oak Brook
Lowest/highest poles plus peers nearest Oak Brook on median household income. Full ladder: /browse and /rankings.
median HH income
Juana Díaz zo… · lowest
19,075
Juana Díaz zo… · lowest
19,075 median HH income
10.6% of the leader · rank #1
Linton Hall · near
170,989
Linton Hall · near
170,989 median HH income
95.1% of the leader · rank #2
West Islip · near
171,045
West Islip · near
171,045 median HH income
95.2% of the leader · rank #3
Oak Brook · this city
171,123
Oak Brook · this city
171,123 median HH income
95.2% of the leader · rank #4
Owings · near
171,194
Owings · near
171,194 median HH income
95.2% of the leader · rank #5
Weldon Spring… · near
171,250
Weldon Spring… · near
171,250 median HH income
95.3% of the leader · rank #6
Lincolnshire · highest
179,735
Lincolnshire · highest
179,735 median HH income
100.0% of the leader · rank #7
What this shows Neighbourhood peers only - not a full nationwide city board. Open a near peer when the gap is small; open the poles when the spread is wide.
Compare beyond this state
Nationwide peers by population, income, and FBI crime rate
Out-of-state nearest neighbors for Oak Brook on ACS population and median household income
, plus FBI UCR reporting rate when the extract covers this place. Link sets are deduped so each column is a distinct comparison path, not a forecast that peers share a labor market or climate.
Similar population
Nearest out-of-state cities by ACS population. This city: 8,028.
Agency-reported UCR totals per 100,000 population, not a neighborhood safety grade or a prediction of personal risk.
Oak Brook - the verdict
Measured against every US city with at least 1,000 residents, Oak Brook lands in the 96th percentile for household income and the 2nd percentile for safety. Source: Census ACS + FBI UCR.
96th
percentile, household income
96th
percentile, home value
18th
percentile, median rent
2nd
percentile, safety
📝 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: Oak Brook, IL
Oak Brook is a small town in Illinois, home to 8,028 residents per U.S. Census Bureau ACS 2023 estimates. Oak Brook households earn a median of $171,123 annually, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 7.7%. Typical homes in Oak Brook are valued around $867,900, and the median resident age is 51.7 years. Educational attainment runs 67.1% of adults with a bachelor's degree or higher. Separately, 45.6% of working-age residents are in the labor force.
Housing supply pressure shows in Census Building Permit Survey data: 19 residential units were authorized in 2024 (Rapid Growth), up 27% from five years earlier. Oak Brook's reported crime rate runs above the national norm: FBI UCR reporting places total crime at 6388.0 incidents per 100,000 residents, above the national average (voluntary agency reporting, reflects reporting activity, not a definitive danger score).
Illinois tracks close to the national cost-of-living baseline: on BEA's 100-equals-national-average cost index, Illinois scores 100.0 (Near Average), per the 2024 Regional Price Parities release. HUD Fair Market Rent for a typical two-bedroom in this state is $1,063 per month. Statewide, average monthly utility bills in Illinois run around $240, per EIA 2023 residential energy data. Natural-hazard exposure scores 54.5 out of 100 on FEMA's National Risk Index (Low).
A decision-led reading path
Useful questions to ask of Oak Brook's data
How this reading path is ordered
This is not a composite city score. It is a city-specific route through the available public records, ordered for this profile so the page starts with questions the joined data can actually answer. The route here runs from housing and income to work and mobility to population change to reported crime to schools and households to comparison shortlist; another city can have a different sequence or fewer supported layers because the source joins are not uniform.
For Oak Brook, city-specific coverage includes FBI reported-crime rates, matched public-school count, annual population history, local building permits, commute-mode shares.
No matched row is reported here for within-city Census tract profiles; the page leaves those layers out instead of substituting a statewide or national value.
1. Housing and income
How far does income reach against housing in Oak Brook?
This is a citywide price-to-income reference, not a mortgage-affordability test; it does not include interest rates, taxes, insurance, household size, or an individual buyer's down payment. Housing value is high relative to the citywide income median. That flags a question for comparison, not a verdict: tenure, household composition, financing costs, and the age of the ACS estimate can all change what a resident actually pays.
The home-value-to-income reference is comparatively stretched: the ACS median home value is 5.1 times median household income. The ACS poverty estimate is 7.7%, which keeps the citywide median from describing every household.
What does the journey to work look like in Oak Brook?
Driving alone is the largest reported mode at 73.6%. A reliable mean commute time is not available for this row, so the mode shares carry the comparison.
Mode share answers how workers usually travel; it does not measure congestion, reliability, distance to a particular job, or the quality of transit service. Remote work has a visible role in the local pattern. That can reduce commute exposure for some workers, but it says nothing about job availability or broadband quality; read it alongside income and housing rather than as a stand-alone lifestyle score.
Is Oak Brook growing, shrinking, or holding steady?
Census PEP estimates show the population grew by +36 residents from 2020 to 2025, a +0.4% change. Separately, Census BPS recorded 19 housing units authorized in 2024. PEP and ACS are different Census series, so the trend is kept separate from the headline ACS population.
The recent population line is broadly flat. That makes the composition of change more important than the headline count: housing turnover, household size, and age structure can shift even when the total barely moves.
Which cities make useful reference points for Oak Brook?
Use the in-state set to hold state policy and broad price conditions more nearly constant. Use the nationwide size set to ask whether cities with a similar resident count produce different housing, income, or commute outcomes. The income set is a third lens, deliberately separate from population matching. The nationwide peer panel below adds a fourth FBI UCR reporting-rate lens, not personal risk.
Within Illinois, the closest population matches are Island Lake (8,023 residents, $98,125 income); Silvis (7,939 residents, $67,569 income); Lincolnshire (7,937 residents, $179,735 income). Outside the state, the closest population matches in this dataset are New Paltz, NY (8,028 residents); Port Jefferson, NY (8,029 residents); Wilmington Manor, DE (8,030 residents). A third, income-matched reference set of 6 out-of-state cities sits in the income neighbourhood chart near the Place Dossier plate. These are mechanical peer sets, not claims that the places share a labor market, climate, culture, or metro context.
These joined records add useful context, but they do not need another full-size panel. Each remains a separate measure with its own geography and source boundary.
Reported crime
What can the FBI record say about safety in Oak Brook?
The joined FBI UCR record reports 6388.0 violent and property crimes per 100,000 residents, above the 2280.5 national reference used here. The difference is 180% higher in arithmetic terms, but agency participation is voluntary and reporting completeness varies.
Treat this as a reporting-rate comparison, not a prediction of personal risk or a neighborhood-level safety grade. Tourism, daytime population, reporting practices, and variation inside the city are not adjusted away. The state rank and same-state peer table are the narrower comparisons available on this page.
Total reported rate
6388.0
Violent rate
62.4
Property rate
6325.6
FBI Uniform Crime Reporting, incidents per 100,000. Voluntary agency reporting; not a danger score.
What does the education layer cover for Oak Brook?
The city has a broader matched school footprint, but count alone does not describe performance, capacity, program availability, or attendance boundaries. This profile deliberately avoids converting it into an unsupported family-friendliness score.
The NCES join finds 3 public schools within the city match. 67.1% of adults age 25+ hold a bachelor's degree or higher in the ACS estimate. These measures answer different questions: the school count describes local institutions, while adult attainment describes residents and cannot be used as a school-quality rating.
Poverty estimate
7.7%
Bachelor's degree+
67.1%
Matched public schools
3
NCES Common Core of Data school locations plus Census ACS resident characteristics.
Top-decile income · poverty 7.7% (Above-median poverty)
Cost of Living Index (state)
100.0 (US=100)
Above-average cost · BEA RPP 2024, Illinois average
B
City profile score · Oak Brook, IL
73/100
5 published dimensions · ACS/FBI 2023
Comparative score against U.S. cities with population of 1,000 or more on Census ACS medians
(income, poverty, bachelor's share, cost of living) and FBI UCR violent-crime rates when
published. Higher means a stronger standing on those published figures, not a livability
rating, not a recommendation to move, buy, or pick a "best" city. Missing inputs drop out
and redistribute weight.
How it is calculated.
Household income A+
$171,123
Median household income vs U.S. cities (pop ≥1,000); ACS.
Bachelor's+ share A+
67.1%
Adults with a bachelor's degree or higher; ACS.
Violent crime A-
62 /100k
FBI UCR violent offenses per 100,000 residents; lower is stronger on this axis.
Poverty rate D
7.7%
Share of residents below the poverty line; lower scores better on this axis.
Cost of living D
100.0 index
BEA state Regional Price Parities index (100 ≈ national average); lower is stronger on this axis. Same value for every city in the state.
Oak Brook profile (scored ACS/FBI dimensions)Read the chart values
Household income: 100/100 (A+) · $171,123
Bachelor's+ share: 96/100 (A+) · 67.1%
Violent crime: 80/100 (A-) · 62 /100k
Poverty rate: 49/100 (D) · 7.7%
Cost of living: 40/100 (D) · 100.0 index
Where Oak Brook sits on home value vs crime among peer cities
Oak Brook's median home value and FBI crime rate plotted with similar-size and
same-state peers (padded with large cities when the peer set is thin). The second
read: pricey does not always mean safer, check which quadrant this city lands in.
Census ACS median home value vs FBI UCR crime rate - Oak Brook highlighted among 9 peers.Read the chart values
Oak Brook, IL (this city): home $867,900, crime 6,388/100k
Camden, SC : home $241,300, crime 4,809/100k
Pismo Beach, CA : home $992,900, crime 2,377/100k
Island Lake, IL : home $241,900, crime 589/100k
Silvis, IL : home $161,300, crime 3,865/100k
Lincolnshire, IL : home $625,800, crime 962/100k
South Beloit, IL : home $160,800, crime 1,182/100k
Hillside, IL : home $233,800, crime 2,177/100k
Paris, IL : home $71,200, crime 2,033/100k
How does Oak Brook compare to other US cities?
Here's how Oak Brook stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.
Household income96% higher than other cities
Home value96% pricier than other cities
Median rent18% pricier than other cities
Safety2% safer than other cities
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
National percentiles can mask local variation. Looking only at Illinois, Oak Brook ranks #452 of 455 Illinois cities by lowest crime rate - a narrower, more locally useful cut than the national comparison above.
How we calculate these percentiles & ranks
Each percentile compares Oak Brook against every qualifying US city; each in-state rank narrows that to Illinois only. Full formula and direction notes: methodology.
Illinois-relative analysis
Median Gross Rent places Oak Brook near the bottom of Illinois's cities
Among the 1,336 Illinois cities PlainCities tracks with reported median gross rent data, Oak Brook ranks #1 - the 0th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Oak Brook only against its own state's cities, not the full US field.
Median Household Income
#32 of 1,311
98th percentile in Illinois
Median Gross Rent
#1 of 1,336
0th percentile in Illinois
Median Home Value
#9 of 1,315
99th percentile in Illinois
Poverty Rate
#629 of 1,335
52nd percentile in Illinois
Bachelor's Degree or Higher
#44 of 1,336
97th percentile in Illinois
How in-state ranks are ordered
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.
Gauge source note
96th percentile nationally for median household income · 2nd percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Oak Brook's profile vs. every US city
Income, affordability, and safety percentile
Oak Brook's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown.
How Oak Brook's home value compares nationally
Median home value vs. every US city (population 1,000+)
$867,9004th percentilemore affordable than 4% of 15,600 US cities
Show national distribution
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
Oak Brook's home-value-to-income ratio: 5.1×
ACS median home value divided by median household income.
Band
pressured
> 5.0×
National rank
#13,025 of 15,516
More affordable than 16% of tracked cities (pop. 1,000+)
Size class
#9,837 of 11,323
Micro cities (under 10,000)
At 5.1×, Oak Brook sits in the pressured band:
national rank #13,025 of 15,516 and #9,837 of 11,323micro cities (under 10,000).
Housing value is high relative to the citywide income median, a comparison flag, not a verdict on any household.
How this ratio is calculated
Ratio = Census ACS 2023 median home value ÷ median household income for cities with both fields and population ≥ 1,000.
Rank 1 = lowest ratio (most compact). Bands match the fleet affordability thresholds used on guides (<3.0 / 3.0–5.0 / >5.0).
This is not a mortgage payment estimate and does not include rates, taxes, insurance, or down payment.
Income distribution context
$171,123Oak Brook, IL median household income (Census ACS)
Show U.S. national quintile / Lorenz context Oak Brook, IL median household income (Census ACS 5-year) with U.S. national quintile shares for context. Diagonal = equality; the curve is national, not computed for Oak Brook, IL.
Key socioeconomic indicators
Bachelor's degree or higher (adults 25+)67.1%
Census ACS S1501, educational attainment
Poverty rate (households below FPL)7.7%
Census ACS S1701, poverty status
Labor force participation (adults 16+)45.6%
Census ACS S2301, share of working-age residents in the labor force
Population
8,028
Median Income
$171,123
Median Home Value
$867,900
Median Age
51.7
Poverty Rate
7.7%
Labor force participation
45.6%
Bachelor's Degree+
67.1%
Safety & Crime
Total Crime Rate
6388.0
per 100,000 residents
Violent Crime
62.4
per 100,000 residents
Property Crime
6325.6
per 100,000 residents
Crime reporting caveat
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.
Schools
Total Schools
3
Public schools in this city
Population Change
PEP vintage
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Oak Brook's Census PEP population estimates, 2020–2025.Read the chart as text
Period
Population
2020
8,072 residents
2021
8,017 residents
2022
7,968 residents
2023
8,013 residents
2024
8,076 residents
2025
8,108 residents
Housing Supply
BPS source
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
📈 Rapid Growth
Total Permits (2024)
19
housing units authorized
Single-Family
19
detached homes
Multifamily
0
apartments & condos
Supply Intensity
2.4
permits per 1,000 residents
5-Year Permit Trend (2019–2024)
Year
Total
Single-Family
Multifamily
Est. Value
2019
15
15
0
$15.7M
2020
7
7
0
$6.5M
2021
5
5
0
$8.5M
2022
17
17
0
$26.3M
2023
14
14
0
$23.8M
2024
19
19
0
$43.6M
Permit volume increased 27% from 2019 to 2024.
Commute Patterns
Commute source
How workers travel to work, Census ACS 2023
Drive Alone
73.6%
Carpool
5.7%
Public Transit
3.0%
Walk
1.2%
Work from Home
16.6%
Based on 2,904 workers 16 and over.
Monthly Utility Costs
Illinois statewide monthly utility average (EIA 2023): $240
EIA 2023 residential energy data puts average monthly utilities across Illinois at $240 (electricity about $100 , water and sewer about $50 ).
These are Illinois statewide averages, not a meter reading for Oak Brook. Actual bills vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
Living Costs & Risk
Illinois's BEA cost-of-living index is 100.0 (Near Average; US average = 100, RPP 2024). HUD Fair Market Rent for a typical two-bedroom in the county around Oak Brook is $1,063/mo. FEMA's National Risk Index, averaged to Illinois statewide on PlainCities, rates natural-hazard exposure at 54.5 / 100 (Low).
Cost/risk geography note
Cost of living is a Illinois statewide BEA average; rent is a county-level HUD Fair Market Rent for the county Oak Brook sits in; the FEMA hazard score shown here is a statewide average of county NRI inputs, not a parcel-level reading.
How Oak Brook compares to similar-size Illinois cities
Same-state peer method
Closest same-state population matches, not geographic neighbors. Population + median household income come from Census Bureau ACS 5-year B01001 and B19013.
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.