Area Code Overview

Area code 847 is a geographic telephone area code in Illinois that went into service on January 20, 1996. The geographic regions covered by this area code overlay has a population of approximately 3,995,010.

Overlay and Dialing Rules

Area Code: 847
State: Illinois
Type: General Purpose Code
In Service Date: January 20, 1996
Overlay Complex: 224/847
Local Dialing Plan: This area requires you to dial 1 and the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 847

This area code is tied for 45th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 5th out of 16.

6,593,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 847

Total assigned 6,593,000

Wireless

1,916,000 assigned

29.06%

Wireline and VoIP

4,085,000 assigned

61.96%

Other / Unclassified

592,000 assigned

8.98%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 847

Estimated assigned wireless phone numbers: 1,916,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

T-Mobile 736,000 (38.41%)

AT&T Wireless 734,000 (38.31%)

Verizon Wireless 446,000 (23.28%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 847

Estimated assigned wireline and VoIP phone numbers: 4,085,000

AT&T 2,817,000 (68.96%)

Lumen 332,000 (8.13%)

Bandwidth 208,000 (5.09%)

Onvoy 191,000 (4.68%)

PAETEC ITEL, LLC 139,000 (3.40%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 106,000 (2.59%)

Comcast Business 86,000 (2.11%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 53,000 (1.30%)

Peerless Network 50,000 (1.22%)

Spectrum 35,000 (0.86%)

TERRA NOVA TELECOM INC. 33,000 (0.81%)

RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 18,000 (0.44%)

Other / Unclassified Assigned Numbering in Area Code 847

Estimated assigned other or unclassified phone numbers: 592,000

SPOK, INC. 190,000 (32.09%)

FIRST COMMUNICATIONS, LLC 175,000 (29.56%)

TELEPORT COMMUNICATIONS AMERICA, LLC - IL 81,000 (13.68%)

AMERICAN MESSAGING SERVICES, LLC 80,000 (13.51%)

ACCESS ONE, INC. - IL 37,000 (6.25%)

INDIANA PAGING NETWORK, INC. 20,000 (3.38%)

STRATUS NETWORKS 3,000 (0.51%)

TON80 COMMUNICATIONS, LLC 3,000 (0.51%)

IP HORIZON LLC 2,000 (0.34%)

MCC TELEPHONY LLC 1,000 (0.17%)

Cities and Towns in Area Code 847

Algonquin, Illinois Antioch, Illinois Arlington Heights, Illinois Barrington, Illinois Bartlett, Illinois Bensenville, Illinois Cary, Illinois Chicago, Illinois Deerfield, Illinois Des Plaines, Illinois Dundee, Illinois Elgin, Illinois Elk Grove, Illinois Evanston, Illinois Fox Lake, Illinois Franklin Park, Illinois Glencoe, Illinois Glenview, Illinois Grayslake, Illinois Half Day, Illinois Hampshire, Illinois Highland Park, Illinois Hinsdale, Illinois Huntley, Illinois Itasca, Illinois La Grange, Illinois Lake Forest, Illinois Lake Villa, Illinois Lake Zurich, Illinois Libertyville, Illinois Mundelein, Illinois Northbrook, Illinois Palatine, Illinois Park Ridge, Illinois Plato Center, Illinois Roselle, Illinois Round Lake, Illinois Skokie, Illinois Summit, Illinois Wauconda, Illinois Waukegan, Illinois Wheeling, Illinois Wilmette, Illinois Winnetka, Illinois Zion, Illinois

These geographic regions are also served by area code 224.

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 847, not live customer counts.

Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.

Population data and locality matching provided by GeoNames.

Last refreshed: April 15, 2026 6:22 pm