City · Illinois · United States
Oak Brook, IL — ZIP codes
1 ZIP code · DuPage County
- City
- Oak Brook
- County
- DuPage
- State
- Illinois
- Country
- United States
- Postal code
- 60523Single source
- Coordinates
- 41.8371, -87.9638 View on OpenStreetMap
- Area codes
- 630, 708, 847, 312, 331 (from the nearest rate centre)
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 60523 | Oak Brook | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Last generated : 2026-08-21. Report an error.