Cost of Living in Oak Brook, IL
Cost indexes, living wages, and fair market rents — 2024 Data
Cost of Living Overview
Overall Index
275.3
100 = national avg
+175.3 vs national average
Living Wage (1 Adult)
$121,131
per year
Living Wage (Family of 4)
$286,311
per year
Cost Index by Category
Housing380.7
Food180.8
Transportation261.6
Healthcare164.6
Utilities200.0
100 = national average. Higher = more expensive.
Fair Market Rent
Source: HUD1 Bedroom
$1,581
per month
2 Bedroom
$1,781
per month
The overall cost of living index in Oak Brook is 275.3, which is 175.3% above the national average. Housing costs are above the national average at an index of 380.7. A single adult needs to earn approximately $121,131 per year to cover basic expenses.