Area Code Overview

Area code 708 is a geographic telephone area code in Illinois that went into service on November 11, 1989. The geographic regions covered by this area code overlay has a population of approximately 3,557,843.

Overlay and Dialing Rules

Area Code: 708
State: Illinois
Type: General Purpose Code
In Service Date: November 11, 1989
Overlay Complex: 464/708
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 708

This area code is ranked 23rd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 1st out of 16.

6,905,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 708

Total assigned 6,905,000

Wireless

3,027,000 assigned

43.84%

Wireline and VoIP

3,159,000 assigned

45.75%

Other / Unclassified

719,000 assigned

10.41%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 708

Estimated assigned wireless phone numbers: 3,027,000

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

T-Mobile 1,288,000 (42.55%)

AT&T Wireless 1,129,000 (37.30%)

Verizon Wireless 610,000 (20.15%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 708

Estimated assigned wireline and VoIP phone numbers: 3,159,000

AT&T 1,384,000 (43.81%)

Onvoy 641,000 (20.29%)

Bandwidth 308,000 (9.75%)

Lumen 221,000 (7.00%)

Comcast Business 142,000 (4.50%)

Peerless Network 95,000 (3.01%)

PAETEC ITEL, LLC 75,000 (2.37%)

Spectrum 63,000 (1.99%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 52,000 (1.65%)

TERRA NOVA TELECOM INC. 51,000 (1.61%)

Telnyx 44,000 (1.39%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 33,000 (1.04%)

Other / Unclassified Assigned Numbering in Area Code 708

Estimated assigned other or unclassified phone numbers: 719,000

SPOK, INC. 270,000 (37.55%)

FIRST COMMUNICATIONS, LLC 142,000 (19.75%)

AMERICAN MESSAGING SERVICES, LLC 110,000 (15.30%)

IP HORIZON LLC 62,000 (8.62%)

ACCESS ONE, INC. - IL 36,000 (5.01%)

TELEPORT COMMUNICATIONS AMERICA, LLC - IL 35,000 (4.87%)

STRATUS NETWORKS 31,000 (4.31%)

INDIANA PAGING NETWORK, INC. 20,000 (2.78%)

FRACTEL, LLC 6,000 (0.83%)

CLEAR RATE COMMUNICATIONS, LLC 5,000 (0.70%)

EXIANT COMMUNICATIONS LLC 1,000 (0.14%)

TON80 COMMUNICATIONS, LLC 1,000 (0.14%)

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 708, 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

708 Area Code