Area Code Overview

Area code 319 is a geographic telephone area code in Iowa that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 794,745.

Overlay and Dialing Rules

Area Code: 319
State: Iowa
Type: General Purpose Code
In Service Date: January 1, 1947
Overlay Complex: 319
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 319

This area code is ranked 213th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 3rd out of 5.

4,252,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 319

Total assigned 4,252,000

Wireless

1,240,000 assigned

29.16%

Wireline and VoIP

1,949,000 assigned

45.84%

Other / Unclassified

1,063,000 assigned

25.00%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 319

Estimated assigned wireless phone numbers: 1,240,000

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

T-Mobile 398,000 (32.10%)

UScellular 333,000 (26.85%)

Verizon Wireless 315,000 (25.40%)

AT&T Wireless 193,000 (15.56%)

Optimum Mobile 1,000 (0.08%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 319

Estimated assigned wireline and VoIP phone numbers: 1,949,000

Lumen 855,000 (43.87%)

Onvoy 535,000 (27.45%)

Bandwidth 122,000 (6.26%)

Spectrum 82,000 (4.21%)

PAETEC ITEL, LLC 73,000 (3.75%)

TERRA NOVA TELECOM INC. 38,000 (1.95%)

WINDSTREAM IOWA COMMUNICATIONS, INC. 33,000 (1.69%)

SOUTH SLOPE COOPERATIVE TELEPHONE COMPANY - IA 32,000 (1.64%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 30,000 (1.54%)

Telnyx 24,000 (1.23%)

SHELLSBURG CABLEVISION, INC. 20,000 (1.03%)

Airus 19,000 (0.97%)

Other / Unclassified Assigned Numbering in Area Code 319

Estimated assigned other or unclassified phone numbers: 1,063,000

SOUTH SLOPE COOP. TEL. CO., INC. 120,000 (11.29%)

MCC TELEPHONY LLC 87,000 (8.18%)

INTEGRATED PATH COMMUNCATIONS, LLC - IA 77,000 (7.24%)

VAN BUREN TEL. CO., INC. 60,000 (5.64%)

BUTLER-BREMER MUTUAL TEL. CO. 50,000 (4.70%)

FARMERS MUTUAL TEL. CO. 50,000 (4.70%)

AUREON COMMUNICATIONS, LLC 42,000 (3.95%)

COOPERATIVE TEL. CO. 40,000 (3.76%)

EAST BUCHANAN TEL. COOP. 30,000 (2.82%)

KEYSTONE FARMS COOP. TEL. CO. 30,000 (2.82%)

MEDIAPOLIS TEL. CO. 30,000 (2.82%)

MODERN COOP. TEL. CO. 30,000 (2.82%)

Cities and Towns in Area Code 319

Ainsworth, Iowa Alburnett, Iowa Allison, Iowa Amana, Iowa Anamosa, Iowa Aplington, Iowa Argyle, Iowa Atkins, Iowa Aurora, Iowa Belle Plaine, Iowa Birmingham, Iowa Blairstown, Iowa Bonaparte, Iowa Brandon, Iowa Brighton, Iowa Burlington, Iowa Cantril, Iowa Cedar Falls, Iowa Cedar Rapids, Iowa Center Point, Iowa Central City, Iowa Clarksville, Iowa Clutier, Iowa Coggon, Iowa Columbus Junction, Iowa Conesville, Iowa Conroy, Iowa Crawfordsville, Iowa Danville, Iowa Denmark, Iowa Denver, Iowa Dodgeville, Iowa Donnellson, Iowa Dunkerton, Iowa Dysart, Iowa Elberon, Iowa Ely, Iowa Fairbank, Iowa Fairfax, Iowa Farmington, Iowa Fort Madison, Iowa Frederika, Iowa Garrison, Iowa Grandview, Iowa Grundy Center, Iowa Guernsey, Iowa Hartwick, Iowa Hazleton, Iowa Hills, Iowa Hillsboro, Iowa Houghton, Iowa Hudson, Iowa Independence, Iowa Iowa City, Iowa Janesville, Iowa Jesup, Iowa Kalona, Iowa Keokuk, Iowa Keosauqua, Iowa Keswick, Iowa Keystone, Iowa Kingston, Iowa Kinross, Iowa La Porte City, Iowa Ladora, Iowa Letts, Iowa Lisbon, Iowa Lockridge, Iowa Lone Tree, Iowa Marengo, Iowa Martelle, Iowa Mediapolis, Iowa Millersburg, Iowa Monticello, Iowa Montrose, Iowa Morley, Iowa Morning Sun, Iowa Mount Auburn, Iowa Mount Pleasant, Iowa Mount Sterling, Iowa Mount Union, Iowa Mount Vernon, Iowa New London, Iowa Newhall, Iowa Nichols, Iowa North English, Iowa North Liberty, Iowa Norway, Iowa Oakville, Iowa Oelwein, Iowa Olds, Iowa Olin, Iowa Oran, Iowa Oxford, Iowa Packwood, Iowa Palo, Iowa Parkersburg, Iowa Plainfield, Iowa Prairieburg, Iowa Primrose, Iowa Quasqueton, Iowa Readlyn, Iowa Reinbeck, Iowa Richland, Iowa Riverside, Iowa Rowley, Iowa Salem, Iowa Sharon Center, Iowa Shell Rock, Iowa Shellsburg, Iowa Solon, Iowa South English, Iowa Springville, Iowa Stockport, Iowa Swisher, Iowa Tiffin, Iowa Traer, Iowa Tripoli, Iowa Troy Mills, Iowa Urbana, Iowa Van Horne, Iowa Victor, Iowa Vinton, Iowa Walker, Iowa Wapello, Iowa Washington, Iowa Waterloo, Iowa Waverly, Iowa Wayland, Iowa Wellman, Iowa West Branch, Iowa West Chester, Iowa West Liberty, Iowa West Point, Iowa Williamsburg, Iowa Winfield, Iowa Winthrop, Iowa

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 319, 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