What area code is Oak Brook, IL?
| City | Oak Brook, IL |
|---|---|
| State | Illinois |
| Area codes | 630, 708, 847, 312 and 331 |
| Time zone | Central Time |
| Phone prefixes | 119 in our data |
Look up a Oak Brook number
Oak Brook’s area codes
| Area code | Also covers |
|---|---|
| 630 | Schaumburg, La Grange, Naperville and Oak Brook |
| 708 | La Grange, Chicago Heights, Oak Forest and Schaumburg |
| 847 | Northbrook, Schaumburg, Arlington Hts and Elk Grove |
| 312 | Chicgozn01, Wheeling, Oak Brook and La Grange |
| 331 | Aurora, Naperville, Downers Grove and St. Charles |
Other places in area code 630
- Schaumburg, IL
- La Grange, IL
- Naperville, IL
- Downers Grove, IL
- Aurora, IL
- Elmhurst, IL
- Lombard, IL
- Northbrook, IL
- Wheaton, IL
- Bensenville, IL
- West Chicago, IL
- Bolingbrook, IL
- Itasca, IL
- St. Charles, IL
- Geneva, IL
- Glen Ellyn, IL
- Batavia, IL
- Sugar Grove, IL
- Warrenville, IL
- Big Rock, IL
- Oswego, IL
- Yorkville, IL
- Elburn, IL
- Elgin, IL
Questions
- What is the area code for Oak Brook, Illinois?
- Oak Brook uses 5 area codes: 630, 708, 847, 312 and 331. 630 is the original or most common one, and newer numbers can be given 331.
- What time zone is Oak Brook in?
- Oak Brook is in Central Time.
- Do I need to dial the area code for a local call in Oak Brook?
- Yes. Because Oak Brook has more than one area code, local calls need all 10 digits: the area code plus the 7-digit number.
- How do I call Oak Brook from another country?
- Dial your country’s exit code (011 from most places, 00 from Europe), then 1, then the area code and number: +1 630 XXX XXXX.