CallataGuidesGet a local business phone number in St. James, MO
St. James's area codes, prefixes and carriers from NANPA records, and how to put a St. James number in front of your customers.
- Area code
- 573 / 235
- Exchanges
- 5NANPA-assigned
- Carriers
- 5
- Population
- 3,932Census 2024 est.
Area codes in St. James
With 3,932 residents in the Census 2024 estimate, St. James sits in Phelps County, Missouri. NANPA lists 5 exchanges for its rate center across 2 area codes; 573 has the most (4, 80%). 573 is part of an overlay with 235, so a new local number in St. James may carry any of those codes depending on which have numbers available. St. James is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 573 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Who holds St. James phone exchanges
5 carriers hold the 5 exchanges assigned to St. James's rate center. T-mobile USA, INC. has the most, with 1. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| T-mobile USA, INC. | 1 | 20% |
| Cellco Partnership d/b/a Verizon Wireless - Mo | 1 | 20% |
| New Cingular Wireless PCS, LLC - Il | 1 | 20% |
| Brightspeed of Missouri, LLC | 1 | 20% |
| Fidelity Cablevision, LLC | 1 | 20% |
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.
Local prefixes for St. James
These are the central office codes NANPA records for St. James. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. 1 of the 5 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 235 | 219 |
| 573 | 261, 263, 265, 899 |
Source: NANPA utilized central office code file.
When St. James's exchanges were assigned
Assignment dates show when each block of St. James numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 50% |
| 2020s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in St. James
NANPA ties every exchange to a rate center. For St. James that is ST JAMES, so a number from one of these exchanges reads as local to people in and around St. James.
Keeping an existing St. James number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 573 when you pick it.
Who does business near St. James
St. James is part of the Rolla, MO micropolitan area, home to 45,672 people in 2024. County Business Patterns counted 1,050 business establishments in the Rolla, MO micropolitan area in 2023, employing 15,928 people. The largest sectors by establishment count are retail trade (186), health care and social assistance (151), and accommodation and food services (122).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 33 | 905 | 27.4 |
| Full-service restaurants | 28 | 715 | 25.5 |
| General automotive repair shops | 21 | 108 | 5.1 |
| Physician practices | 20 | 126 | 6.3 |
| Agencies providing services for the elderly and persons with disabilities | 20 | 286 | 14.3 |
| Insurance agencies and brokerages | 18 | — | — |
| Hotels and motels | 18 | 207 | 11.5 |
| Engineering services firms | 14 | — | — |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A St. James number on Callata
Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.
If you already have a number in St. James, 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 the Rolla, MO micropolitan area, 15 users on RingCentral RingEX Core come to $450.00 a month and on Ooma Office Pro $374.25, at month-to-month list prices checked September 28, 2026. On Callata the same 15 people cost $299.00 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 | $299.00 | $3,588.00 |
| Quo (Starter) | $19.00 per user | $285.00 | $3,420.00 |
| Nextiva (Core) | $23.00 per user | $345.00 | $4,140.00 |
| Ooma (Office Pro) | $24.95 per user | $374.25 | $4,491.00 |
| Dialpad (Standard) | $27.00 per user | $405.00 | $4,860.00 |
| RingCentral (RingEX Core) | $30.00 per user | $450.00 | $5,400.00 |
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 St. James, MO?
St. James has exchanges in 573 and 235; 573 has the most.
How many phone companies have exchanges in St. James?
5, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing St. James 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 St. James?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 15 users come to $299.00 a month. For comparison, 15 users on RingCentral RingEX Core list at $450.00 a month (checked September 28, 2026).