Oak Brook is a village in DuPage County, Illinois, home to about 8,056 people across 8.0 square miles. Its ZIP code is 60523.
Homes sold for a median of $282 per square foot in the three months ending August 2026, a seller’s market.
Mostly Oak Brook; also Westmont
Each card is that ZIP code’s whole market, including any part outside Oak Brook. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Oak Brook’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Chicago O'Hare International Airport (ORD)10 miles away |
|---|---|
| Nearest city of 250,000+ | Chicago, IL14 miles away |
Straight-line distances from the center of Oak Brook; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Oak Brook had 8,163 residents in the 2020 census, down 6% since 2000.
It’s the 262nd largest of 1,450 towns in Illinois by population.
DuPage County grew from 28,196 residents in 1900 to 932,877 in 2020.
DuPage County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 15°F. About 40.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Lisle-Morton Arboretum, IL weather station (6 miles away).
595,691 jobs at 34,121 businesses in DuPage County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
749 doctors and other health care providers list an office in Oak Brook.
Nearest hospitals
Providers with an office here
| Primary care doctors | 33 |
|---|---|
| Specialist doctors | 98 |
| Dentists | 44 |
| Nurse practitioners and physician assistants | 58 |
| Mental health providers | 341 |
| Physical and occupational therapists | 135 |
| Optometrists | 11 |
| Chiropractors | 29 |
| Pharmacies | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (14 nearby)
Grocery stores (6 nearby)
Pharmacies (3 nearby)
Libraries (1 nearby)
Museums (3 nearby)
Theaters and performance venues (2 nearby)
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1958.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Butler SD 53. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Oak Brook Park DistrictOak Brook | Pre-K | 7 | Public | 0.5 mi |
| Brook Forest Elem SchoolOak Brook | K–5 | 293 | Public | 0.3 mi |
| Butler Junior High SchoolOak Brook | 6–8 | 163 | Public | 1.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Fusion Academy Ob: Chicago- Oak BrookOak Brook | 6–12 | 43 | Nonsectarian | 1.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
Real estate agents who work in Oak Brook answer questions about everyday life in town: parking, the commute, trash pickup, a good mechanic, anything you’d ask a neighbor.
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Shares ZIP codes with Westmont.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.