Caller ID for
Area code 847
Area code 847 Northbrook, Illinois
Area code 847 is in Illinois, with numbers assigned in Northbrook, Roselle, Arlington Heights and 40 more places. It’s 11:14 PM there now.
- State
- Illinois17 area codes in Illinois
- Time zone
- Central11:14 PM there now
- Exchanges
- 78643 places
- Overlay
- 224Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 847 is
Numbers in 847 are assigned to 43 places in 5 counties: Cook County, Lake County, DuPage County, Kane County and McHenry County.
No single place dominates: Northbrook, the largest, has 16% of the exchanges.
- Northbrook122
- Roselle87
- Arlington Heights38
- Elk Grove Village37
- Waukegan33
- Des Plaines32
- Wheeling31
- Skokie31
- Palatine24
- Elgin23
- Evanston22
- Libertyville21
- La Grange21
- Park Ridge19
- Deerfield19
- Lake Forest16
- Franklin Park15
- Barrington Hills15
- Lake Zurich13
- Glenview13
- Hinsdale12
- Highland Park10
- Bensenville9
- Grayslake8
Phone companies in 847
786 blocks of numbers in 847 are held by 19 phone companies. The most belong to AT&T (361), AT&T Mobility (80) and Verizon Business (67).
A mix: about 23% wireless, 46% local phone and cable and 31% other carriers, including internet phone services.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
847 went into service in 1996, added to the area of 708.
224 (since 2002) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
6 new exchanges were assigned since 2021, the latest in March 2026.
Calling 847
It’s 11:14 PM Central time in 847 right now.
From elsewhere in the U.S., dial 1, 847 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Illinois has 17 area codes: 217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 861 and 872.
- 630 · Roselle, IL · about 18 mi
- 312 · Chicago, IL · about 22 mi
- 773 · Chicago, IL · about 23 mi
- 872 · Chicago, IL · about 23 mi
- 331 · Aurora, IL · about 24 mi
- 708 · La Grange, IL · about 28 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 847 area code
Map of the 847 area code around Northbrook, Roselle and Arlington Heights, Illinois.
Cities on the map
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Questions about 847
Where is area code 847?
In Illinois, covering Northbrook, Roselle and Arlington Heights and other places across 5 counties.
What time zone is 847 in?
Central time. It was 11:14 PM there when this page loaded.
Is 847 an overlay?
Yes. 224 serves the same area, so dial all 10 digits for local calls.
Which phone companies have 847 numbers?
19 companies hold blocks; the most belong to AT&T, AT&T Mobility and Verizon Business. About 23% of blocks are wireless.
Is 847 running out of numbers?
Not on record. 6 new exchanges have been assigned since 2021.