Caller ID for
Area code 224
Area code 224 Northbrook, Illinois
Area code 224 is in Illinois, with numbers assigned in Northbrook, Arlington Heights, Des Plaines and 35 more places. It’s 11:12 PM there now.
- State
- Illinois17 area codes in Illinois
- Time zone
- Central11:12 PM there now
- Exchanges
- 59438 places
- Overlay
- 847Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 224 is
Numbers in 224 are assigned to 38 places in 5 counties: Cook County, Lake County, Kane County, McHenry County and DuPage County.
No single place dominates: Northbrook, the largest, has 12% of the exchanges.
- Northbrook72
- Arlington Heights70
- Des Plaines48
- Elgin44
- Waukegan38
- Algonquin36
- Deerfield20
- Barrington Hills19
- Elk Grove Village18
- Wheeling15
- Glenview14
- Skokie13
- Libertyville12
- Round Lake12
- Lake Forest11
- Roselle11
- Palatine11
- Evanston10
- Mundelein10
- Zion8
- Fox Lake7
- Antioch7
- Huntley7
- Lake Zurich6
Phone companies in 224
594 blocks of numbers in 224 are held by 26 phone companies. The most belong to T-Mobile (149), AT&T Mobility (92) and Verizon Wireless (76).
Mostly mobile: about 53% of blocks belong to wireless networks, 10% to local phone and cable companies and 37% to other carriers, such as 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
224 went into service in 2002, added to the area of 847.
847 (since 1996) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
165 new exchanges were assigned since 2021, the latest in September 2026.
Calling 224
It’s 11:12 PM Central time in 224 right now.
From elsewhere in the U.S., dial 1, 224 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 21 mi
- 331 · Aurora, IL · about 25 mi
- 312 · Chicago, IL · about 26 mi
- 773 · Chicago, IL · about 27 mi
- 872 · Chicago, IL · about 27 mi
- 708 · La Grange, IL · about 32 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 224 area code
Map of the 224 area code around Northbrook, Arlington Heights and Des Plaines, Illinois.
Cities on the map
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Questions about 224
Where is area code 224?
In Illinois, covering Northbrook, Arlington Heights and Des Plaines and other places across 5 counties.
What time zone is 224 in?
Central time. It was 11:12 PM there when this page loaded.
Is 224 an overlay?
Yes. 847 serves the same area, so dial all 10 digits for local calls.
Which phone companies have 224 numbers?
26 companies hold blocks; the most belong to T-Mobile, AT&T Mobility and Verizon Wireless. About 53% of blocks are wireless.
Is 224 running out of numbers?
Not on record. 165 new exchanges have been assigned since 2021.