PlainZIP

Oak Brook, IL

Single-footprint Census roll-up for Oak Brook, IL: 1 USPS ZIP, population 9,890. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet OAK-BROOK-IL · Oak Brook, IL 1 ZIPs · 9,890 pop · #2332/25278 · DuPage County

INC-TOP · RANK-TOP · PHOTO-FINISH · BOOK-ONE · OWN-MID · POP-TOWN · SPREAD-UNK · HOME-TOP

  • INC-TOP $118,194
  • RANK-TOP #2332/25278
  • PHOTO-FINISH ≈ Downers Grove
  • BOOK-ONE 1 ZIP
  • OWN-MID 81% owners
  • POP-TOWN 9,890
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $782,100

Nearest income peer: Downers Grove, IL (+ $1,145 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Oak Brook

Lowest/highest poles plus county-sharing cities nearest Oak Brook on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Oak Brook, IL sits among US cities with a top-decile household income, on a town-scale population base, across a single-ZIP footprint.

Top 9%
household income vs 25,278 US cities
9,890
city population (Census)
1
USPS ZIP codes covered
$118,194
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $118,194 and home value $782,100 should be read as near-neighborhood numbers ; bachelor's attainment averages 62.7%.

Owner-occupancy sits in a mixed band (80.5%) - check the ZIP page's tenure split before treating Oak Brook as a pure owner town.

Within Illinois, Newark is the closest lower-income city and Gays the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Oak Brook.

Population concentration

One ZIP, 60523, is all of Oak Brook

There is no split to weigh here: 60523 holds every one of Oak Brook's 9,890 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Dense ZBP book packed into Oak Brook's one ZIP

Citywide ZBP: 1,419 establishments, 37,633 employees , annual payroll $3,626,348k (~143 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 60523 (1,419 units) ; leading NAICS Professional, scientific, and technical services (268) · also Health care and social assistance · Finance and insurance .

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ZIP Codes in Oak Brook, IL

These ZIP codes sit in DuPage County, which covers 36 ZIP codes in all; 1 of them fall in Oak Brook. See the DuPage County roll-up →

Oak Brook lands mid-pack among the 12 cities sharing DuPage County: Aurora, Naperville and Wheaton earn more and Lombard, Carol Stream and Addison earn less. Glendale Heights marks the far end of that range at $86,372, 27% below Oak Brook.

ZIP Code Population Median income Establishments Density
60523 9,890 $118,194 1,419 427
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Oak Brook roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Oak Brook, .