The typical owner-occupied home in Oak Brook is worth about $903,200, 3.4 times the Illinois median of $263,300 and 2.7 times the national median of $332,700. Owners pay a median $10,001 a year in property taxes, about 1.11% of their home's value, lower than the Illinois rate of 2.01%. The median household earns $175,870 a year, so the median home costs 5.1 times the median income (3.2 times for Illinois). 91% of occupied homes here are lived in by their owners, and 46% of those owners still have a mortgage.
Oak Brook at a glance
| Oak Brook | Illinois | U.S. | |
|---|---|---|---|
| Median home value | $903,200 | $263,300 | $332,700 |
| Median property tax paid per year | $10,001 | $5,298 | $3,119 |
| Property tax as a share of value | 1.11% | 2.01% | 0.94% |
| Median household income | $175,870 | $83,390 | $80,734 |
| Homes lived in by their owners | 91% | 67% | 65% |
| Owner homes with a mortgage | 46% | 61% | 61% |
| Median monthly costs, owners with a mortgage | $4,001 | $1,987 | $1,963 |
| Those costs as a share of the owners' income | 25.0% | 20.6% | 21.0% |
| Median rent | $2,590 | $1,274 | $1,413 |
| Rent as a share of renters' income | 32.0% | 29.1% | 30.6% |
| Median year homes were built | 1979 | 1971 | 1980 |
| Vacant homes | 9.2% | 7.7% | 10.1% |
| Population | 8,056 | 12,694,798 | 334,922,499 |
What a typical home costs per month in Oak Brook
At this week's average 30-year rate of 7.11%, buying the median Oak Brook home of $903,200 with 20% down costs about $6,072 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $7,722, because the loan is bigger and FHA adds mortgage insurance.
Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $260,250 for the 20%-down payment. That payment is 41% of the median Oak Brook household income of $175,870; at that income and 20% down, the 28% guideline points to a home of about $610,000.
The median rent here is $2,590 a month, so owning the median home costs about $3,482 a month more than renting, before you count the equity you build and any tax benefits.
| Down payment | $180,640 |
|---|---|
| Loan amount | $722,560 |
| Principal and interest | $4,861 |
| Property taxes (1.11% a year) | $835 |
| Homeowners insurance (our estimate, 0.5% a year) | $376 |
| PMI | $0 |
| Total per month | $6,072 |
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| Down payment | $31,612 |
|---|---|
| Loan amount | $886,841 |
| Principal and interest | $5,966 |
| Property taxes (1.11% a year) | $835 |
| Homeowners insurance (our estimate, 0.5% a year) | $376 |
| FHA mortgage insurance | $545 |
| Total per month | $7,722 |
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Questions about home buying in Oak Brook
What is the median home value in Oak Brook?
About $903,200 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.
How much are property taxes in Oak Brook?
Homeowners pay a median $10,001 a year, which is about 1.11% of the median home value. Your bill depends on your home's assessed value and local rates.
What income do you need to buy a home in Oak Brook?
For the median home with 20% down at 7.11%, the payment is about $6,072 a month. Keeping that under 28% of gross income takes about $260,250 a year.
More about Oak Brook
- Mortgage Refinance in Oak Brook
- Debt Relief in Oak Brook
- Home Equity Loans in Oak Brook
- Guides and quotes for mortgage refinance on our sister site, MortgageRefinance.com
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data