CallataGuidesGet a local business phone number in Mount Vernon, IA
Mount Vernon's area code, prefixes and carriers from NANPA records, and how to put a Mount Vernon number in front of your customers.
- Area code
- 319
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 4,518Census 2024 est.
Mount Vernon area codes
Mount Vernon, in Linn County, Iowa, had a Census-estimated population of 4,518 in July 2024. All 4 exchanges NANPA lists for its rate center are in area code 319. Mount Vernon is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 319 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 319 | 4 | 100% | 1947 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Mount Vernon phone exchanges
4 carriers hold the 4 exchanges assigned to Mount Vernon's rate center. Centurylink Communications, LLC has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Centurylink Communications, LLC | 1 | 25% |
| Aureon Communications, LLC | 1 | 25% |
| Bandwidth.com CLEC, LLC - Ia | 1 | 25% |
| Qwest Corporation | 1 | 25% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Mount Vernon phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Mount Vernon. The earliest assignment date recorded in the file for these codes is 2006. 1 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 319 | 205, 305, 535, 895 |
Source: NANPA utilized central office code file.
When Mount Vernon's exchanges were assigned
The table groups Mount Vernon's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 33% |
| 2010s | 1 | 33% |
| 2020s | 1 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Mount Vernon
NANPA ties every exchange to a rate center. For Mount Vernon that is MT VERNON, so a number from one of these exchanges reads as local to people in and around Mount Vernon.
New local numbers are drawn from carrier inventory, so the exact 319 numbers available change over time; porting an existing number is free.
The local business market
Mount Vernon is part of the Cedar Rapids, IA metro area, home to 279,000 people in 2024. County Business Patterns counted 6,793 business establishments in the Cedar Rapids, IA metro area in 2023, employing 128,088 people. The largest sectors by establishment count are health care and social assistance (848), retail trade (830), and construction (738).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 236 | 4,390 | 18.6 |
| Limited-service restaurants | 169 | 3,461 | 20.5 |
| Insurance agencies and brokerages | 157 | 833 | 5.3 |
| Offices of real estate agents and brokers | 104 | — | — |
| Child day care services | 98 | 1,221 | 12.5 |
| Dental offices | 97 | 864 | 8.9 |
| General automotive repair shops | 95 | 526 | 5.5 |
| Physician practices | 94 | 2,160 | 23.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Mount Vernon number on Callata
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.
Porting a number you already use in Mount Vernon is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
The comparison below uses 19 users, the rounded average establishment size in the Cedar Rapids, IA metro area. At list prices checked September 28, 2026, that is $474.05 a month on Ooma Office Pro and $570.00 on RingCentral RingEX Core. Callata comes to $379.00 a month for 19 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $379.00 | $4,548.00 |
| Quo (Starter) | $19.00 per user | $361.00 | $4,332.00 |
| Nextiva (Core) | $23.00 per user | $437.00 | $5,244.00 |
| Ooma (Office Pro) | $24.95 per user | $474.05 | $5,688.60 |
| Dialpad (Standard) | $27.00 per user | $513.00 | $6,156.00 |
| RingCentral (RingEX Core) | $30.00 per user | $570.00 | $6,840.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Mount Vernon, IA?
319. All exchanges NANPA lists for Mount Vernon are in 319.
How many phone companies have exchanges in Mount Vernon?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Mount Vernon business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Mount Vernon?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 19 users come to $379.00 a month. For comparison, 19 users on RingCentral RingEX Core list at $570.00 a month (checked September 28, 2026).