Area code 319: where it is and who calls from it
Area code 319 is in Iowa.
Iowa (Cedar Rapids, Waterloo, Burlington, Iowa City; parts of eastern Iowa)
| Where | Iowa |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 1947 |
| Overlay | No |
| Prefixes assigned | 565 of 792 possible (71%) |
Where 319 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 319, with how many prefixes each has.
Plus 77 smaller rate centers.
Who holds 319 numbers
- Mobile carrier 24%
- Local phone company 32%
- Internet / business phone carrier 26%
- Phone company 18%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| CenturyLink / Lumen | Local phone company | 103 | 18% |
| UScellular | Mobile carrier | 39 | 7% |
| T-Mobile (including Sprint) | Mobile carrier | 39 | 7% |
| Verizon Wireless | Mobile carrier | 39 | 7% |
| Windstream Iowa Communications | Local phone company | 37 | 7% |
| Mcc Telephony | Internet / business phone carrier | 33 | 6% |
| Onvoy | Internet / business phone carrier | 29 | 5% |
| Windstream Iowa Communications, Inc. - North | Local phone company | 21 | 4% |
| TON80 Communications | Internet / business phone carrier | 17 | 3% |
| Windstream (PAETEC) | Internet / business phone carrier | 16 | 3% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number.
States served: Iowa.
Other area codes in Iowa
Got a call from 319?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 319 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.