Northbrook, Illinois
Central Time Zone (UTC-6) · IL · —
About Area Codes in Northbrook, Illinois
Northbrook, Illinois is served by 2 area codes: 847, 224. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Northbrook require 10-digit dialing. The city is in the Central time zone (UTC-6).
Other cities in area code 847
Frequently Asked Questions
What area code is Northbrook, Illinois?
Northbrook, Illinois uses area codes 847 and 224.
What time zone is Northbrook in?
Northbrook is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Northbrook?
Yes, all local calls in Northbrook require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 847 created?
Area code 847 was established in 1996 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 847 with Northbrook?
Other cities sharing area code 847 with Northbrook include Arlington Heights, Buffalo Grove, Deerfield, Des Plaines, Evanston, among others.
Northbrook, IL · Central Time Zone