Area Code Overview

Area code 414 is a geographic telephone area code in Wisconsin that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 924,740.

Overlay and Dialing Rules

Area Code: 414
State: Wisconsin
Type: General Purpose Code
In Service Date: January 1, 1947
Overlay Complex: 414
Local Dialing Plan: This area does require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 414

This area code is ranked 193rd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 5th out of 8.

4,709,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 414

Total assigned 4,709,000

Wireless

1,843,000 assigned

39.14%

Wireline and VoIP

2,456,000 assigned

52.16%

Other / Unclassified

410,000 assigned

8.71%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 414

Estimated assigned wireless phone numbers: 1,843,000

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

T-Mobile 589,000 (31.96%)

AT&T Wireless 499,000 (27.08%)

UScellular 450,000 (24.42%)

Verizon Wireless 305,000 (16.55%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 414

Estimated assigned wireline and VoIP phone numbers: 2,456,000

AT&T 1,316,000 (53.58%)

Onvoy 358,000 (14.58%)

Bandwidth 287,000 (11.69%)

Spectrum 168,000 (6.84%)

Lumen 149,000 (6.07%)

PAETEC ITEL, LLC 58,000 (2.36%)

Peerless Network 49,000 (2.00%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 23,000 (0.94%)

Commio 15,000 (0.61%)

EON TELECOM, INC. 13,000 (0.53%)

NUSO 6,000 (0.24%)

TERRA NOVA TELECOM INC. 5,000 (0.20%)

Other / Unclassified Assigned Numbering in Area Code 414

Estimated assigned other or unclassified phone numbers: 410,000

SPOK, INC. 190,000 (46.34%)

AMERICAN MESSAGING SERVICES, LLC 110,000 (26.83%)

TELEPORT COMMUNICATIONS AMERICA, LLC WI 62,000 (15.12%)

TDS METROCOM, LLC 30,000 (7.32%)

FRACTEL, LLC 8,000 (1.95%)

HD CARRIER LLC 3,000 (0.73%)

TON80 COMMUNICATIONS, LLC 3,000 (0.73%)

AHOI LLC 1,000 (0.24%)

IP HORIZON LLC 1,000 (0.24%)

STRATUS NETWORKS 1,000 (0.24%)

WAVENATION, LLC 1,000 (0.24%)

Cities and Towns in Area Code 414

Milwaukee, Wisconsin

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 414, 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