The Town FilesOak Brook, Illinois
Village in DuPage County · population 8,163 (2020 Census)
- Median home
- $903,200
- Household income
- $175,870
- Jan low / Jul high
- 15° / 84°
- Snow a year
- 42 in
- Tornadoes ≤10 mi since 1950
- 53
- Median age
- 55.2
Oak Brook is a village of 8,163 people in DuPage County, Illinois. The median home is worth $903,200, above the typical Illinois town ($156,600). It ranks better for young professionals than 96% of Illinois towns, more upscale than 92% of Illinois towns, better transit than 91% of Illinois towns.
How Oak Brook ranks
Percentile among Illinois towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Illinois towns.
Homes and cost of living
The median home in Oak Brook is worth $903,200, above the typical Illinois town ($156,600). Homes cost about 5.1 times the median household income of $175,870, which is more affordable than 1% of Illinois towns. Median rent is $2,590 a month. 91.1% of households own their home.
| Housing | Oak Brook | Typical Illinois town |
|---|---|---|
| Median home value | $903,200 | $156,600 |
| Median rent | $2,590 | $960 |
| Median household income | $175,870 | $72,500 |
| Home value ÷ income | 5.1× | 2.2× |
| Homeownership | 91.1% | 76.6% |
| Median year built | 1979 | 1967 |
| Seasonal / vacation homes | 4.0% | — |
Who lives in Oak Brook
| People | Oak Brook | Typical Illinois town |
|---|---|---|
| Median age | 55.2 | 40.4 |
| Age 65 and over | 34.1% | 18.7% |
| Under 18 | 17.9% | — |
| Bachelor's degree or higher | 66.4% | 21.8% |
| Below the poverty line | 6.6% | 9.9% |
| Veterans | 3.9% | — |
| Born outside the U.S. | 30.0% | — |
| Work from home | 20.9% | 8.9% |
| Average commute | 31.5 min | 26.1 min |
| Homes with broadband | 90.6% | 90.4% |
Weather in Oak Brook
July highs average 84.4°F and January lows 14.7°F. About 40.2 inches of rain and melted snow fall a year, with 42.3 inches of snow (typical Illinois town: 24.2 in). Expect about 17 days a year at 90°F or hotter and 144 nights at or below freezing.
Tornadoes, storms and disasters
53 tornadoes have passed within 10 miles of Oak Brook since 1950, compared with 27 for the typical Illinois town. 14 rated (E)F2 or stronger. The strongest, an F4, struck on June 13, 1976 about 9.5 miles from the town center and killed 2. Tornadoes within 10 miles have caused 4 deaths and 136 injuries since 1950. The most recent was on July 27, 2026.
Hail of 1 inch or larger has been reported within 10 miles 161 times; the largest was 4.80 inches on March 10, 2026.
Severe weather in DuPage County since 1996
DuPage County has been included in 16 federal disaster or emergency declarations since 1953, most often for flood, tornado, hurricane.
| Declared | Incident | Declaration |
|---|---|---|
| March 26, 2020 | Biological | DR-4489: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3435: Covid-19 |
| May 10, 2013 | Flood | DR-4116: Severe Storms, Straight-Line Winds, And Flooding |
| March 17, 2011 | Snowstorm | DR-1960: Severe Winter Storm And Snowstorm |
| August 19, 2010 | Severe Storm | DR-1935: Severe Storms And Flooding |
Jobs and pay in DuPage County
DuPage County had 622,113 jobs in 2024, paying an average of $79,674 a year. Unemployment was 3.4% in 2023; in Oak Brook itself the ACS puts it at 10%.
Public schools in Oak Brook
3 public schools with 470 students, about 8.1 students per teacher.
| School | Grades | Students | Per teacher |
|---|---|---|---|
| Brook Forest Elem School | K-5 | 279 | 8.5 |
| Butler Junior High School | 6-8 | 183 | 7.3 |
| Oak Brook Park District | PK-PK | 8 | — |
Towns near Oak Brook
- Oakbrook Terrace, IL1.4 mi · 2,751 people · home $372,400
- Clarendon Hills, IL2.6 mi · 8,702 people · home $605,800
- Hinsdale, IL2.8 mi · 17,395 people · home $1,053,700
- Westmont, IL3.1 mi · 24,429 people · home $379,100
- Westchester, IL3.3 mi · 16,892 people · home $327,300
- Hillside, IL3.4 mi · 8,320 people · home $246,800
- Western Springs, IL3.6 mi · 13,629 people · home $739,400
- Villa Park, IL3.6 mi · 22,263 people · home $329,000
Oak Brook questions
Is Oak Brook, Illinois a good place to retire?
On The Town Files lifestyle rankings, Oak Brook scores better for retirees than 78% of Illinois towns and quieter than 28%. 34.1% of residents are 65 or older (median age 55.2).
How much does a house cost in Oak Brook?
The median owner-occupied home in Oak Brook is valued at $903,200 (Census ACS 2020–2024), against a median household income of $175,870, so homes cost about 5.1 times income. Median rent is $2,590 a month.
What is the weather like in Oak Brook?
July highs average 84.4°F and January lows 14.7°F (NOAA 1991–2020 normals). It gets about 40.2 inches of precipitation a year and 42.3 inches of snow.
Does Oak Brook get tornadoes?
53 tornadoes have passed within 10 miles of Oak Brook since 1950 (NOAA Storm Events); the strongest was a F4 on June 13, 1976. The typical Illinois town has had 27.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)