Oak Brook, IL housing market
The typical Oak Brook home is worth about $991,000, up 9% in a year, 233% above the Illinois typical home. Homes typically sell in 48 days, a little above asking.
Home values, sales, trends and how Oak Brook compares with the towns next door — updated as new data is published.
Oak Brook at a glance
A balanced market
About 5.8 months of supply: neither buyers nor sellers have a clear edge.
Typical home value, 2016–2026
Show as a table
| January | Oak Brook | Illinois |
|---|---|---|
| 2017 | $650,000 | $181,000 |
| 2018 | $654,000 | $190,000 |
| 2019 | $653,000 | $195,000 |
| 2020 | $650,000 | $200,000 |
| 2021 | $682,000 | $215,000 |
| 2022 | $722,000 | $236,000 |
| 2023 | $753,000 | $248,000 |
| 2024 | $813,000 | $263,000 |
| 2025 | $867,000 | $278,000 |
| 2026 | $951,000 | $290,000 |
| August 2026 | $991,000 | $298,000 |
Oak Brook and its neighbors
| Town | Typical value | 1-yr change | Days on market | Median income |
|---|---|---|---|---|
| Oak Brook | $991K | +9% | 48 | $175,870 |
| Hinsdale | $1.3M | +9.7% | 39 | $250,001 |
| Oakbrook Terrace | $422K | +5% | — | $76,905 |
| Westmont | $413K | +4.2% | 40 | $88,090 |
| Lombard | $388K | +5% | 43 | $100,362 |
| Downers Grove | — | — | 36 | $115,114 |
| Elmhurst | $642K | +8.5% | 46 | $149,644 |
5.6 years of income
The typical Oak Brook home costs about 5.6 years of the town's median household income, more than across Illinois (3.6 years).
How Oak Brook ranks on affordability →
Home value ÷ ACS median household income.
Owners, rent & taxes
U.S. Census Bureau, ACS 2020-2024.
Home values: Zillow Home Value Index (ZHVI), Zillow Research, August 2026. Sales, days on market and supply: Redfin Data Center, May 2026. Income, ownership, taxes and rent: U.S. Census Bureau, American Community Survey. Listings link to their publishers.