CallataGuidesGet a local business phone number in Mount Vernon, TX
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
- 903
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 2,601Census 2024 est.
Mount Vernon area codes
With 2,601 residents in the Census 2024 estimate, Mount Vernon sits in Franklin County, Texas. All 4 exchanges NANPA lists for its rate center are in area code 903. 903 is part of an overlay with 430, so a new local number in Mount Vernon may carry any of those codes depending on which have numbers available. Mount Vernon is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 903 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 |
|---|---|---|---|---|---|
| 903 | 4 | 100% | 1990 | 430 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Mount Vernon
4 carriers hold the 4 exchanges assigned to Mount Vernon's rate center. CSC Voice, 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. A business number in Mount Vernon can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| CSC Voice, LLC | 1 | 25% |
| T-mobile USA, INC. | 1 | 25% |
| Frontier Southwest INC d/b/a Frontier Comm of Texas | 1 | 25% |
| TWC Ip Enabled Services, LLC | 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.
Exchanges (NPA-NXX) assigned in Mount Vernon
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Mount Vernon's rate center (MT VERNON). The earliest assignment date recorded in the file for these codes is 2022. 1 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 903 | 270, 466, 537, 867 |
Source: NANPA utilized central office code file.
What makes a number local to Mount Vernon
What a caller sees as "local" is the area code plus prefix. In Mount Vernon, those come from the MT VERNON rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 903 numbers available change over time; porting an existing number is free.
Businesses around Mount Vernon
Mount Vernon is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 670,878 business establishments in Texas in 2023, employing 12,012,629 people. The largest sectors by establishment count are retail trade (84,369), professional, scientific, and technical services (83,842), and health care and social assistance (80,576).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 24,360 | 545,407 | 22.4 |
| Physician practices | 21,500 | 217,413 | 10.1 |
| Full-service restaurants | 20,819 | 493,197 | 23.7 |
| Law offices | 13,833 | 87,363 | 6.3 |
| Insurance agencies and brokerages | 12,210 | 78,885 | 6.5 |
| Dental offices | 11,902 | 86,333 | 7.3 |
| Offices of real estate agents and brokers | 11,405 | 33,989 | 3.0 |
| Management consulting firms | 9,705 | 80,499 | 8.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Mount Vernon
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
If you already have a number in Mount Vernon, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in Texas, 18 users on RingCentral RingEX Core come to $540.00 a month and on Ooma Office Pro $449.10, at month-to-month list prices checked September 28, 2026. On Callata the same 18 people cost $359.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $359.00 | $4,308.00 |
| Quo (Starter) | $19.00 per user | $342.00 | $4,104.00 |
| Nextiva (Core) | $23.00 per user | $414.00 | $4,968.00 |
| Ooma (Office Pro) | $24.95 per user | $449.10 | $5,389.20 |
| Dialpad (Standard) | $27.00 per user | $486.00 | $5,832.00 |
| RingCentral (RingEX Core) | $30.00 per user | $540.00 | $6,480.00 |
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, TX?
903. All exchanges NANPA lists for Mount Vernon are in 903.
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; 18 users come to $359.00 a month. For comparison, 18 users on RingCentral RingEX Core list at $540.00 a month (checked September 28, 2026).