Area Code Overview

Area code 320 is a geographic telephone area code in Minnesota that went into service on March 17, 1996. The geographic regions covered by this area code overlay has a population of approximately 537,948.

Overlay and Dialing Rules

Area Code: 320
State: Minnesota
Type: General Purpose Code
In Service Date: March 17, 1996
Overlay Complex: 320
Local Dialing Plan: This area does not require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 320

This area code is ranked 242nd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 5th out of 7.

3,574,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 320

Total assigned 3,574,000

Wireless

854,000 assigned

23.89%

Wireline and VoIP

2,067,000 assigned

57.83%

Other / Unclassified

653,000 assigned

18.27%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 320

Estimated assigned wireless phone numbers: 854,000

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

Verizon Wireless 373,000 (43.68%)

AT&T Wireless 248,000 (29.04%)

AERIAL COMMUNICATIONS, INC. 173,000 (20.26%)

T-Mobile 59,000 (6.91%)

Optimum Mobile 1,000 (0.12%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 320

Estimated assigned wireline and VoIP phone numbers: 2,067,000

Onvoy 656,000 (31.74%)

Lumen 516,000 (24.96%)

Bandwidth 153,000 (7.40%)

Verizon 131,000 (6.34%)

Telnyx 84,000 (4.06%)

TERRA NOVA TELECOM INC. 72,000 (3.48%)

Spectrum 69,000 (3.34%)

RUNESTONE TELEPHONE ASSOCIATION 60,000 (2.90%)

WINDSTREAM LAKEDALE, INC. 41,000 (1.98%)

Peerless Network 39,000 (1.89%)

CHARTER IP ENABLED SERVICES, LLC 33,000 (1.60%)

Commio 32,000 (1.55%)

Other / Unclassified Assigned Numbering in Area Code 320

Estimated assigned other or unclassified phone numbers: 653,000

FEDERATED TEL. COOP. 80,000 (12.25%)

MIDCONTINENT COMMUNICATIONS - MN 52,000 (7.96%)

MELROSE TEL. CO. 40,000 (6.13%)

MID STATE TEL. CO. 40,000 (6.13%)

TELEPORT COMMUNICATIONS AMERICA, LLC - MN 39,000 (5.97%)

ALBANY MUTUAL TEL. ASSN., INC. 30,000 (4.59%)

BENTON COOP. TEL. CO. 30,000 (4.59%)

FARMERS MUTUAL TEL. CO. 30,000 (4.59%)

GARDONVILLE COOP. TEL. ASSN. 30,000 (4.59%)

HUTCHINSON TEL. CO. 30,000 (4.59%)

MCC TELEPHONY OF MINNESOTA, LLC - MN 27,000 (4.13%)

FRACTEL, LLC 25,000 (3.83%)

Cities and Towns in Area Code 320

Albany, Minnesota Alexandria, Minnesota Annandale, Minnesota Appleton, Minnesota Askov, Minnesota Atwater, Minnesota Avon, Minnesota Barrett, Minnesota Beardsley, Minnesota Belgrade, Minnesota Bellingham, Minnesota Benson, Minnesota Big Bend City, Minnesota Bird Island, Minnesota Bock, Minnesota Boyd, Minnesota Braham, Minnesota Brandon, Minnesota Brooten, Minnesota Browerville, Minnesota Browns Valley, Minnesota Brownton, Minnesota Buffalo Lake, Minnesota Carlos, Minnesota Cerro Gordo, Minnesota Chokio, Minnesota Clara City, Minnesota Clarkfield, Minnesota Clear Lake, Minnesota Clearwater, Minnesota Clinton, Minnesota Cloverton, Minnesota Cokato, Minnesota Cold Spring, Minnesota Correll, Minnesota Cosmos, Minnesota Cyrus, Minnesota Danube, Minnesota Danvers, Minnesota Dassel, Minnesota Dawson, Minnesota Donnelly, Minnesota Eden Valley, Minnesota Elrosa, Minnesota Finlayson, Minnesota Foley, Minnesota Foreston, Minnesota Freedhem, Minnesota Freeport, Minnesota Garfield, Minnesota Garrison, Minnesota Gilman, Minnesota Glencoe, Minnesota Glenwood, Minnesota Graceville, Minnesota Granite Falls, Minnesota Greenwald, Minnesota Grey Eagle, Minnesota Grove City, Minnesota Hancock, Minnesota Hazel Run, Minnesota Hector, Minnesota Herman, Minnesota Hinckley, Minnesota Hoffman, Minnesota Holdingford, Minnesota Holloway, Minnesota Holmes City, Minnesota Howard Lake, Minnesota Hutchinson, Minnesota Isle, Minnesota Kandiyohi, Minnesota Kensington, Minnesota Kerkhoven, Minnesota Kimball, Minnesota Lake Lillian, Minnesota Lester Prairie, Minnesota Litchfield, Minnesota Little Falls, Minnesota Long Prairie, Minnesota Lowry, Minnesota Madison, Minnesota Malmo, Minnesota Maple Lake, Minnesota Marietta, Minnesota Maynard, Minnesota Mc Grath, Minnesota Melrose, Minnesota Milaca, Minnesota Milan, Minnesota Millerville, Minnesota Montevideo, Minnesota Mora, Minnesota Morris, Minnesota Murdock, Minnesota New London, Minnesota New Munich, Minnesota Norcross, Minnesota Odessa, Minnesota Ogilvie, Minnesota Olivia, Minnesota Onamia, Minnesota Ortonville, Minnesota Osakis, Minnesota Paynesville, Minnesota Pease, Minnesota Pennock, Minnesota Pierz, Minnesota Pine City, Minnesota Plato, Minnesota Prinsburg, Minnesota Ramey, Minnesota Randall, Minnesota Raymond, Minnesota Renville, Minnesota Rice, Minnesota Richmond, Minnesota Royalton, Minnesota Rush City, Minnesota Sacred Heart, Minnesota Saint Cloud, Minnesota Saint Joseph, Minnesota Saint Martin, Minnesota Sandstone, Minnesota Sauk Centre, Minnesota Sedan, Minnesota Silver Lake, Minnesota South Haven, Minnesota Spicer, Minnesota Starbuck, Minnesota Stewart, Minnesota Sunburg, Minnesota Svea, Minnesota Swanville, Minnesota Upsala, Minnesota Villard, Minnesota Wahkon, Minnesota Watkins, Minnesota Wheaton, Minnesota Willmar, Minnesota Winsted, Minnesota

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 320, 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