Downers Grove, Illinois Area Codes & Phone Number Distribution

Estimated Number of Assigned Phone Numbers in Downers Grove, Illinois

626,000

In Downers Grove, Illinois, wireless numbers account for 28.6% of assigned numbers, below the statewide average of 38.9%. Downers Grove's wireline and VoIP share is 15.1 percentage points higher than the statewide average. Compared with the state overall, Downers Grove has a more concentrated wireline and VoIP assignment mix. Downers Grove is served by 2 area codes in an overlay area, meaning multiple area codes cover the same geographic region.

Area Codes Used by Downers Grove, Illinois

331 630

Estimated Service-Type Mix of Assigned Phone Numbers in Downers Grove, Illinois

Total assigned 626,000

Wireline and VoIP

404,000 assigned numbers

64.54%

Wireless

179,000 assigned numbers

28.59%

Other / Unclassified

43,000 assigned numbers

6.87%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Downers Grove, Illinois

Estimated assigned wireless phone numbers: 179,000

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

Verizon Wireless 119,000 (66.48%)

AT&T Wireless 60,000 (33.52%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Downers Grove, Illinois

Estimated assigned wireline and VoIP phone numbers: 404,000

AT&T 227,000 (56.19%)

Onvoy 56,000 (13.86%)

Lumen 32,000 (7.92%)

Comcast Business 20,000 (4.95%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 18,000 (4.46%)

Spectrum 16,000 (3.96%)

Bandwidth 15,000 (3.71%)

Peerless Network 8,000 (1.98%)

PAETEC ITEL, LLC 7,000 (1.73%)

Telnyx 2,000 (0.50%)

Vonage 2,000 (0.50%)

TERRA NOVA TELECOM INC. 1,000 (0.25%)

Other / Unclassified Assigned Numbering in Downers Grove, Illinois

Estimated assigned other or unclassified phone numbers: 43,000

FIRST COMMUNICATIONS, LLC 20,000 (46.51%)

TELEPORT COMMUNICATIONS AMERICA, LLC - IL 16,000 (37.21%)

ACCESS ONE, INC. - IL 3,000 (6.98%)

IP HORIZON LLC 2,000 (4.65%)

FRACTEL, LLC 1,000 (2.33%)

STRATUS NETWORKS 1,000 (2.33%)

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 Downers Grove, Illinois, not live customer counts.

Some providers may have assigned phone numbers tied to this locality 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.