Oak Brook is located in Illinois and has an overall cost of living that is +81% compared to the national average. Understanding the full picture of living expenses — from housing and rent to grocery bills and healthcare — is essential when considering a move to Oak Brook.

Housing: Median rent in Oak Brook is $7,012 / month, and the median home price is $2,336,293. Housing costs are +337% compared to the national average, which significantly impacts monthly budgets.

Groceries: Daily essentials like bread ($4.25), milk ($4.92), and eggs ($4.86) reflect the local grocery landscape. Overall grocery costs are +4% vs the national average.

Healthcare: Medical costs include doctor visits ($178.14), dentist visits ($143.09), and prescription drugs ($25.79). These costs should be factored into your monthly budget when planning a move.

Illinois has a state income tax rate of 4.95%, which affects take-home pay for Oak Brook residents.

Explore More

Salary Calculator

Calculate what salary you need when moving to or from Oak Brook.

Cheapest US Cities

See the most affordable cities in the US ranked by cost index.

All Illinois Cities

Compare Oak Brook with all 377 cities in Illinois.

Oak Brook, Illinois Cost of Living FAQ

Common questions about living costs in Oak Brook.

Oak Brook, Illinois has an overall cost of living that is +81% the national average. Housing costs are +337% vs the national average. Grocery prices are +4% vs average. Utilities are -5% vs average. This makes Oak Brook a relatively expensive city.

The median rent in Oak Brook, Illinois is $7,012 / month. Average energy bills run $208.02 / month. Phone bills average $185.58 / month. Housing is typically the largest expense for residents.

Healthcare costs in Oak Brook: doctor's visit averages $178.14, dentist visit averages $143.09, prescription drugs average $25.79. Overall healthcare expenses in the area are influenced by the +4% grocery cost difference.

Oak Brook is one of 377 cities tracked in Illinois. With an overall cost +81% vs the national average, it tends to be pricier than some smaller communities. Visit our Illinois state page to compare all cities side-by-side and find the best fit for your budget.

Oak Brook offers cost of living +81% compared to the national average. Key factors to consider: median home price of $2,336,293, rent of $7,012 / month, and a state income tax of 4.95% in Illinois. Explore our detailed cost breakdown above to see if Oak Brook fits your budget.