Minnesota, United States
Central Time
10:16 AM
Area Code
320
State / Province
Minnesota
Country
United States
Time Zone
Central Time
Area code 320 covers 145 cities and communities across Minnesota, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+13205550100">+13205550100</a><a href="tel:+13205550199">+13205550199</a>Look up which exchange in Minnesota a specific 320 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
510 active prefixes in this area code, assigned as 3,281 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 3,281
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 320-200 | 0 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | 1 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | 2 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | 3 | St Cloud | Landline or VoIP | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (7770) | STCDMNTOXYX | 626 | — | — |
| 320-200 | 4 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | 5 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | 6 | St Cloud | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - MN (8405) | STCDMNTOXUX | 626 | — | — |
| 320-200 | 7 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | 8 | St Cloud | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-200 | 9 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-200 | A | St Cloud | Landline or VoIP | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (7770) | STCDMNTOXYX | 626 | — | — |
| 320-201 | 0 | Villard | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-201 | 1 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | 2 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | 3 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | 4 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | 5 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | 6 | Villard | Landline or VoIP | CENTURYLINK COMMUNICATIONS, LLC (508J) | STCDMNTOXHX | 626 | — | — |
| 320-201 | 7 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | 8 | Villard | Landline or VoIP | TELNYX LLC (073H) | STCDMNTOXTX | 626 | — | — |
| 320-201 | 9 | Villard | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-201 | A | Villard | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-202 | A | St Cloud | Landline | QWEST CORPORATION (9631) | ST CLOUD | 626 | — | — |
| 320-203 | A | St Cloud | Landline | QWEST CORPORATION (9631) | ST CLOUD | 626 | — | — |
| 320-204 | 0 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-204 | 1 | St Cloud | Landline or VoIP | TEKSTAR COMMUNICATIONS, INC. (4156) | STCDMNES6MD | 626 | — | — |
| 320-204 | 2 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-204 | 3 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-204 | 4 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-204 | 5 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-204 | 6 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-204 | 7 | St Cloud | Landline or VoIP | METROPCS, INC. (5562) | STCDMNTOX8X | 626 | — | — |
| 320-204 | 8 | St Cloud | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (5816) | STCDMNTOX7Y | 626 | — | — |
| 320-204 | 9 | St Cloud | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (5816) | STCDMNTOX7Y | 626 | — | — |
| 320-204 | A | St Cloud | Landline or VoIP | TEKSTAR COMMUNICATIONS, INC. (4156) | STCDMNES6MD | 626 | — | — |
| 320-205 | A | Braham | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-206 | 0 | Richmond | Landline or VoIP | MIDCONTINENT COMMUNICATIONS - MN (429A) | CLSPMNAL0MD | 626 | — | — |
| 320-206 | 7 | Richmond | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MN (5256) | STCDMNTOX0X | 626 | — | — |
| 320-206 | A | Richmond | Landline or VoIP | MIDCONTINENT COMMUNICATIONS - MN (429A) | CLSPMNAL0MD | 626 | — | — |
| 320-207 | 0 | Hinckley | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-207 | 1 | Hinckley | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-207 | 2 | Hinckley | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-207 | 3 | Hinckley | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-207 | 4 | Hinckley | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-207 | 5 | Hinckley | Landline or VoIP | PEERLESS NETWORK OF MINNESOTA, LLC - MN (107F) | MINNEAPOLIS | 628 | — | — |
| 320-207 | 6 | Hinckley | Landline or VoIP | PEERLESS NETWORK OF MINNESOTA, LLC - MN (107F) | MINNEAPOLIS | 628 | — | — |
| 320-207 | 7 | Hinckley | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-207 | 8 | Hinckley | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-207 | 9 | Hinckley | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-207 | A | Hinckley | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-208 | 0 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 1 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 2 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 3 | Morris | Landline or VoIP | MCC TELEPHONY OF MINNESOTA, LLC - MN (719F) | STCDMNTOXXX | 626 | — | — |
| 320-208 | 4 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 5 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 6 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 7 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 8 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | 9 | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-208 | A | Morris | Landline or VoIP | ONVOY, LLC - MN (184D) | STCDMNTOX3X | 626 | — | — |
| 320-209 | 0 | Mora | Wireless | AERIAL COMMUNICATIONS, INC. (6701) | EAGNMNZO3MD | 628 | — | — |
| 320-209 | 1 | Mora | Wireless | AERIAL COMMUNICATIONS, INC. (6701) | EAGNMNZO3MD | 628 | — | — |
| 320-209 | 2 | Mora | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 628 | — | — |
| 320-209 | 3 | Mora | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-209 | 5 | Mora | Landline or VoIP | MIDCONTINENT COMMUNICATIONS - MN (429A) | HSNGMNXHEMD | 628 | — | — |
| 320-209 | 6 | Mora | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-209 | 7 | Mora | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MN (5256) | MPLSMNCD9MD | 628 | — | — |
| 320-209 | 9 | Mora | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 628 | — | — |
| 320-209 | A | Mora | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MN (5256) | MPLSMNCD9MD | 628 | — | — |
| 320-210 | A | Ogilvie | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-212 | A | Willmar | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (5816) | STCDMNTOX7Y | 626 | — | — |
| 320-213 | A | Pine City | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-214 | A | Willmar | Landline | QWEST CORPORATION (9631) | WILLMAR | 626 | — | — |
| 320-215 | A | Rush City | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-216 | 0 | Sandstone | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-216 | 1 | Sandstone | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-216 | 2 | Sandstone | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | MPLSMNDTXRX | 628 | — | — |
| 320-216 | 3 | Sandstone | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-216 | 4 | Sandstone | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-216 | 5 | Sandstone | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (5816) | MPLSMNMSAMD | 628 | — | — |
| 320-216 | 6 | Sandstone | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-216 | 7 | Sandstone | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-216 | 8 | Sandstone | Landline or VoIP | PEERLESS NETWORK OF MINNESOTA, LLC - MN (107F) | MINNEAPOLIS | 628 | — | — |
| 320-216 | 9 | Sandstone | Landline or VoIP | PEERLESS NETWORK OF MINNESOTA, LLC - MN (107F) | MINNEAPOLIS | 628 | — | — |
| 320-216 | A | Sandstone | Landline or VoIP | ONVOY, LLC - MN (184D) | MINNEAPOLIS | 628 | — | — |
| 320-217 | 0 | St Cloud | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (5816) | STCDMNTOX7Y | 626 | — | — |
| 320-217 | 1 | St Cloud | Landline or VoIP | METROPCS, INC. (5562) | STCDMNTOX8X | 626 | — | — |
| 320-217 | 2 | St Cloud | Landline or VoIP | CHARTER IP ENABLED SERVICES, LLC (792K) | WTPKMNAC2MD | 626 | — | — |
| 320-217 | 3 | St Cloud | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-217 | 4 | St Cloud | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-217 | 5 | St Cloud | Landline or VoIP | CHARTER IP ENABLED SERVICES, LLC (792K) | WTPKMNAC2MD | 626 | — | — |
| 320-217 | 6 | St Cloud | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MN (980E) | STCDMNTOXRX | 626 | — | — |
| 320-217 | 7 | St Cloud | Landline or VoIP | CHARTER IP ENABLED SERVICES, LLC (792K) | WTPKMNAC2MD | 626 | — | — |
| 320-217 | 8 | St Cloud | Landline or VoIP | CHARTER IP ENABLED SERVICES, LLC (792K) | WTPKMNAC2MD | 626 | — | — |
| 320-217 | 9 | St Cloud | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-217 | A | St Cloud | Wireless | AERIAL COMMUNICATIONS, INC. (6701) | STCDMNTOX8X | 626 | — | — |
| 320-219 | 0 | Alexandria | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-219 | 1 | Alexandria | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
| 320-219 | 2 | Alexandria | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | STCDMNTOXQX | 626 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
510
Assignment Blocks
3,281
Rate Centers
145
Carriers of Record
79
| Type | Blocks | Share |
|---|---|---|
| Landline | 626 | 19% |
| Landline or VoIP | 1,786 | 54% |
| Wireless | 869 | 26% |
| Carrier | Blocks |
|---|---|
| ONVOY, LLC - MN | 704 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 303 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 271 |
| AERIAL COMMUNICATIONS, INC. | 201 |
| QWEST CORPORATION | 173 |
| BANDWIDTH.COM CLEC, LLC - MN | 150 |
| LEVEL 3 COMMUNICATIONS, LLC - MN | 134 |
| CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN | 112 |
| TELNYX LLC | 89 |
| CENTURYLINK OF MINNESOTA, INC. | 78 |
| 69 other carriers | 1,066 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| St Cloud | 85 | 481 |
| Alexandria | 18 | 96 |
| Willmar | 18 | 99 |
| Little Falls | 13 | 94 |
| Hutchinson | 11 | 74 |
| Pine City | 10 | 65 |
| Litchfield | 9 | 67 |
| Braham | 8 | 76 |
| Glencoe | 8 | 68 |
| Mora | 8 | 56 |
| Morris | 8 | 65 |
| Ogilvie | 8 | 63 |
| Rush City | 8 | 73 |
| Granite Falls | 7 | 43 |
| Hinckley | 7 | 70 |
| Montevideo | 7 | 57 |
| Ortonville | 6 | 43 |
| Sandstone | 6 | 52 |
| Sauk Centre | 6 | 48 |
| Benson | 5 | 55 |
| Glenwood | 5 | 42 |
| Olivia | 5 | 47 |
| Appleton | 4 | 34 |
| Avon | 4 | 36 |
| Clear Lake | 4 | 41 |
| Cold Spring | 4 | 33 |
| Dassel | 4 | 18 |
| Dawson | 4 | 15 |
| Foley | 4 | 33 |
| Hector | 4 | 28 |
| Long Prairie | 4 | 23 |
| Milaca | 4 | 35 |
| Royalton | 4 | 30 |
| St Joseph | 4 | 42 |
| Annandale | 3 | 8 |
| Atwater | 3 | 14 |
| Bird Island | 3 | 20 |
| Brownton | 3 | 15 |
| Cokato | 3 | 28 |
| Cosmos | 3 | 10 |
| Foreston | 3 | 17 |
| Grove City | 3 | 19 |
| Holdingford | 3 | 28 |
| Holmes City | 3 | 17 |
| Howard Lake | 3 | 28 |
| Madison | 3 | 11 |
| Pierz | 3 | 21 |
| Richmond | 3 | 5 |
| Swanville | 3 | 22 |
| Villard | 3 | 23 |
| Albany | 2 | 4 |
| Askov | 2 | 14 |
| Beardsley | 2 | 19 |
| Belgrade | 2 | 10 |
| Bock | 2 | 14 |
| Brandon | 2 | 4 |
| Brooten | 2 | 8 |
| Browerville | 2 | 12 |
| Buffalo Lake | 2 | 16 |
| Carlos | 2 | 16 |
| Chokio | 2 | 4 |
| Clara City | 2 | 3 |
| Clarkfield | 2 | 17 |
| Clearwater | 2 | 18 |
| Clinton | 2 | 9 |
| Danube | 2 | 9 |
| Elrosa | 2 | 14 |
| Finlayson | 2 | 15 |
| Garrison | 2 | 10 |
| Graceville | 2 | 10 |
| Hancock | 2 | 3 |
| Herman | 2 | 10 |
| Irving | 2 | 10 |
| Isle | 2 | 10 |
| Kimball | 2 | 14 |
| Lester Prairie | 2 | 10 |
| Maple Lake | 2 | 6 |
| Maynard | 2 | 3 |
| McGrath | 2 | 16 |
| Melrose | 2 | 4 |
| Millerville | 2 | 4 |
| New London | 2 | 11 |
| Onamia | 2 | 10 |
| Osakis | 2 | 3 |
| Paynesville | 2 | 7 |
| Pease | 2 | 10 |
| Pennock | 2 | 17 |
| Plato | 2 | 19 |
| Prinsburg | 2 | 7 |
| Randall | 2 | 4 |
| Raymond | 2 | 10 |
| Sacred Heart | 2 | 4 |
| Silver Lake | 2 | 9 |
| South Haven | 2 | 5 |
| Spicer | 2 | 11 |
| St Martin | 2 | 9 |
| Starbuck | 2 | 4 |
| Stewart | 2 | 14 |
| Sunburg | 2 | 9 |
| Wahkon | 2 | 15 |
| Watkins | 2 | 13 |
| West Danbury | 2 | 13 |
| Wheaton | 2 | 12 |
| Barrett | 1 | 10 |
| Bellingham | 1 | 1 |
| Big Bend | 1 | 1 |
| Boyd | 1 | 10 |
| Browns Valley | 1 | 1 |
| Cerro Gordo | 1 | 1 |
| Cloverton | 1 | 7 |
| Correll | 1 | 1 |
| Cyrus | 1 | 10 |
| Danvers | 1 | 1 |
| Donnelly | 1 | 10 |
| Eden Valley | 1 | 11 |
| Freedhem | 1 | 1 |
| Freeport | 1 | 1 |
| Garfield | 1 | 1 |
| Gilman | 1 | 10 |
| Greenwald | 1 | 11 |
| Grey Eagle | 1 | 1 |
| Hazel Run | 1 | 11 |
| Hoffman | 1 | 10 |
| Holloway | 1 | 1 |
| Kandiyohi | 1 | 11 |
| Kensington | 1 | 10 |
| Kerkhoven | 1 | 10 |
| Lake Lillian | 1 | 11 |
| Lowry | 1 | 1 |
| Malmo | 1 | 10 |
| Marietta | 1 | 1 |
| Milan | 1 | 1 |
| Murdock | 1 | 9 |
| New Munich | 1 | 1 |
| Norcross | 1 | 10 |
| Odessa | 1 | 1 |
| Ramey | 1 | 10 |
| Renville | 1 | 11 |
| Rice | 1 | 11 |
| Sedan | 1 | 9 |
| Sullivan Lake | 1 | 1 |
| Svea | 1 | 11 |
| Terrace | 1 | 9 |
| Upsala | 1 | 1 |
| Winsted | 1 | 11 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 320 is a North American Numbering Plan (NANP) telephone area code assigned to Minnesota, United States. It is one of 8 area codes serving Minnesota. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 320 is an active North American Numbering Plan (NANP) area code, currently assigned to Minnesota, United States. It is safe to answer or dial calls using this area code.
Area code 320 covers 145 cities and communities in Minnesota, including Albany, Alexandria, Annandale, Appleton, Askov, and 140 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 320 area code observe Central Time (IANA timezone: America/Chicago). Central Time is UTC−6 in winter (CST) and UTC−5 in summer (CDT). When placing a call to a 320 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Minnesota, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 320 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 320 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 320 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +13205550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.