Oak Brook, Illinois
Oak Brook, Illinois, in DuPage County, has ZIP code 60523 and area code 630, with 331 as an overlay.
- ZIP code
- 60523
- Area codes
- 630, 331
- County
- DuPage County
- State
- Illinois
- Time zone
- Central Time
- Coordinates
- 41.8371, -87.9638
ZIP codes in Oak Brook
Area codes for Oak Brook
- Area code 630
In service since August 3, 1996. Shares its area with 331. Local calls are dialed with 1 plus ten digits.
- Area code 331
In service since October 7, 2007. Shares its area with 630. Local calls are dialed with 1 plus ten digits.
Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.
Time zone
Oak Brook is in the Central Time zone.
Towns near Oak Brook
- Oakbrook Terrace1.9 km (1.2 mi)
- Hinsdale4.2 km (2.6 mi)
- Clarendon Hills4.6 km (2.9 mi)
- Villa Park4.9 km (3.0 mi)
- Lombard5.8 km (3.6 mi)
- Western Springs6.4 km (4.0 mi)
- Elmhurst6.5 km (4.0 mi)
- Hillside6.5 km (4.0 mi)
Local numbers in area code 630
Looking for a phone number with a Oak Brook area code? These 630 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (630) 454-7707Batavia, IL$59View & buy
- (630) 473-1707West Chicago, IL$59View & buy
- (630) 473-1727West Chicago, IL$59View & buy
- (630) 473-1747West Chicago, IL$59View & buy
- (630) 473-1775West Chicago, IL$59View & buy
- (630) 473-2108West Chicago, IL$59View & buy
- (630) 473-2109West Chicago, IL$59View & buy
- (630) 482-4567Batavia, IL$59View & buy
- (630) 570-0787Hinsdale, IL$59View & buy
- (630) 580-8084Wheaton, IL$59View & buy
- (630) 580-8850Wheaton, IL$59View & buy
- (630) 594-9876Bensenville, IL$59View & buy
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