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US area code · Illinois

Area code 847

Where the 847 area code is, its overlay and how to dial a +1 847 number from anywhere.

CoversAlgonquin, IllinoisTime zoneCentral (CT)TypeOverlay
Quick answer

The 847 area code is in Algonquin, Illinois, United States (Central (CT)). To call from abroad: +1 847 555-0123. It is an overlay, so all 10 digits are dialled.

StateIllinois
Main areaAlgonquin
Time zoneCentral (CT)
TypeOverlay
10-digit dialingRequired
In service since27-Jul-1995

The 847 area code is a geographic North American Numbering Plan (NANP) code covering Algonquin, Illinois. It has been in service since 27-Jul-1995 and sits in the Central (CT) time zone.

Overlay 847 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

847224708

How to dial a 847 number

From abroad+1 847 555-0123
Within the US / Canada1 847 555-0123
Locally (same area)847 555-0123

Cities in the 847 area code

A 847 number is usually in one of these places in Illinois — 4 counties.

Algonquin MchenryArlington Heights CookBuffalo Grove LakeCarpentersville KaneDes Plaines CookElk Grove Village CookEvanston CookGlenview CookGurnee LakeHighland Park LakeHoffman Estates CookLake Forest LakeLake in the Hills MchenryLibertyville LakeMorton Grove CookMount Prospect CookMundelein LakeNiles CookNorth Chicago LakeNorthbrook CookPalatine CookPark Ridge CookRolling Meadows CookRound Lake BeachSchaumburg CookSkokie CookSouth Elgin KaneVernon Hills LakeWaukegan LakeWheeling CookWilmette CookZion Lake

Other Illinois area codes

217224309312331447464618630708730773779815861872

Frequently asked questions

Where is the 847 area code?

The 847 area code is in Algonquin, Illinois, United States (Central (CT)).

Is 847 an overlay area code?

Yes. 847 overlays the same region as 224, 708, so callers dial all 10 digits.

Do I have to dial 10 digits for 847?

Yes — dial the area code plus the seven-digit number.

How do I call a 847 number from another country?

Dial your exit code (or +), then 1, then 847, then the number: +1 847 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 847 number does not pinpoint a street or ZIP code.

Missed a call from +1 847?

In the 30 days to September 24, 2026, 504 unwanted calls showing a 847 number were reported to the US Federal Trade Commission, 65% of them recorded messages or robocalls. That puts 847 at #201 of 670 area codes reported.

Other184
Calls pretending to be government, businesses, or family and friends70
Dropped call or no message61
Medical & prescriptions37
Before you call back
  • If you do not know anyone in Illinois, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 847 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 847 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 847:

Illinois Bell Tel Co 361New Cingular Wireless PCS, LLC 80Teleport Communications America, LLC 57T-Mobile USA, Inc. 54Level 3 Communications, LLC 46Mcimetro Access Transmission Services LLC 44

About 21.7% of the 799 prefixes in use belong to mobile carriers: a 847 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 847 — cities & rate centres