Skip to content
Country Dialing CodesA clearer way to call the world
AboutContact
Español — prefijos-telefonicos.comFrançais — indicatifs-telephoniques.net
US area code · Illinois

224 area code

Where the 224 area code is, its overlay and how to dial a +1 224 number from anywhere.

CoversAlgonquin, IllinoisTime zoneCentral (CT)TypeOverlay
Quick answer

The 224 area code is in Algonquin, Illinois, United States (Central (CT)). To call from abroad: +1 224 555-0123. It is an overlay, so all 10 digits are dialled.

StateIllinois
Main areaAlgonquin
Time zoneCentral (CT)
TypeOverlay
10-digit dialingRequired
In service since01-May-1998

The 224 area code is a geographic North American Numbering Plan (NANP) code covering Algonquin, Illinois. It has been in service since 01-May-1998 and sits in the Central (CT) time zone.

Overlay 224 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.

224847

How to dial a 224 number

From abroad+1 224 555-0123
Within the US / Canada1 224 555-0123
Locally (same area)224 555-0123

Cities in the 224 area code

A 224 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

217309312331447464618630708730773779815847861872

Frequently asked questions

Where is the 224 area code?

The 224 area code is in Algonquin, Illinois, United States (Central (CT)).

Is 224 an overlay area code?

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

Do I have to dial 10 digits for 224?

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

How do I call a 224 number from another country?

Dial your exit code (or +), then 1, then 224, then the number: +1 224 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 224 number does not pinpoint a street or ZIP code.

Number holders in area code 224

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 609 prefixes are in use in 224, shared by 30 companies. The largest holders:

CompanyPrefixesShare
T-Mobile USA, Inc.13823%
New Cingular Wireless PCS, LLC9215%
Cellco Partnership Dba Verizon Wireless7612%
Onvoy, LLC6711%
Illinois Bell Tel Co346%
Fractel, LLC295%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 224 numbers

Reports to the FTC, last 30 days
496
Recorded messages or robocalls
62%
Rank among area codes
#207 of 670
Most reported subjects
Other (176)
Reducing your debt (credit cards, mortgage, student loans) (114)
Dropped call or no message (61)

Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.

Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).

All US area codes United States +1 Map of area code 224 — cities & rate centres

Explore by continent