The 847 area code covers Northbrook, Roselle and 40 more places in Illinois.
Area code 847 is in Illinois, on Central Time. In the 847 area, phone numbers are given out most in Cook County, then Lake and DuPage counties. It has been in service since January 20, 1996. 224 covers the same area, so two neighbours can have different area codes.
- Where
- 5 counties in Illinois, mostly Cook County, Lake County and DuPage County
- Time zone
- Central Time
- In service since
- January 20, 1996
- Shares its area with
- 224 (since 2002)
- Prefixes in use
- 786
- How to dial
- Local calls need 1, then the area code, then the number: 1-847-555-0142.
Find out who called you from an 847 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (847) number is on today, use our free carrier lookup.
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Northbrook holds 16% of the phone prefixes in area code 847.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 786 prefixes in use shows where 847 numbers are actually given out.
- Northbrook122 prefixes, 16%
- Roselle87 prefixes, 11%
- Arlington Heights38 prefixes, 5%
- Waukegan33 prefixes, 4%
- Des Plaines32 prefixes, 4%
- Wheeling31 prefixes, 4%
- Skokie31 prefixes, 4%
- Palatine24 prefixes, 3%
Also served: Elgin, Evanston, Libertyville and La Grange and 30 smaller places.
Illinois Bell (AT&T) holds the most phone number prefixes in area code 847: 361 of 786.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 786 prefixes in use in 847 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Illinois Bell (AT&T)AT&T's landline company | 361 | 46% |
| AT&T MobilityMobile network | 80 | 10% |
| Teleport (AT&T)AT&T's business phone network | 57 | 7% |
| T-MobileMobile network | 54 | 7% |
| Level 3 (Lumen)Lumen's business and wholesale network | 46 | 6% |
| PAETEC (Windstream)Windstream's business phone network | 26 | 3% |
| 14 other carriers | 162 | 21% |
52% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
847 has been overlaid once since 1996.
1996
847 starts on January 20, 1996, split off from 708.
2002
On January 5, 2002, 224 is added on top of 847, so new numbers here can get either code.
An 847 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 847 are 630, 312 and 708.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
These are the questions people ask most about area code 847.
Where is area code 847?
847 covers Northbrook, Roselle, Arlington Heights and Waukegan and 38 more places in Illinois. In the 847 area, phone numbers are given out most in Cook County, then Lake and DuPage counties.
What state is area code 847 in?
Illinois. 847 is an Illinois area code on Central Time.
What cities use area code 847?
The places holding the most 847 prefixes are Northbrook, Roselle, Arlington Heights, Waukegan, Des Plaines, Wheeling, Skokie and Palatine, out of 42 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 847?
No single phone company owns 847. NANPA's records show Illinois Bell (AT&T) holds the most 847 prefixes, 361 of 786, followed by AT&T Mobility and Teleport (AT&T). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 847 in?
847 is on Central Time.
When did area code 847 start?
847 went into service on January 20, 1996, when it was split off from 708.
Is 847 the same area as 224?
Yes. 224 (since 2002) covers the same ground as 847. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial an 847 number?
Local calls need 1, then the area code, then the number: 1-847-555-0142.
Is 847 a toll-free number?
No. 847 is a regular area code for Northbrook and Roselle in Illinois, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 847?
The closest are 630/331 (Roselle, Illinois), 312/773/872 (Chicago, Illinois), 708/464 (La Grange, Illinois) and 262 (Waukesha, Wisconsin), measured between the centres of each area.
Who called me from an 847 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 847 a scam?
847 is a real Illinois area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.