CallataGuidesGet a local business phone number in St. John, KS
St. John's area code, prefixes and carriers from NANPA records, and how to put a St. John number in front of your customers.
- Area code
- 620
- Exchanges
- 2NANPA-assigned
- Carriers
- 2
- Population
- 1,173Census 2024 est.
What area code is St. John, KS?
With 1,173 residents in the Census 2024 estimate, St. John sits in Stafford County, Kansas. All 2 exchanges NANPA lists for its rate center are in area code 620. St. John is in the Central and Mountain time zone.
According to NANPA's dialing-plan data, local calls within 620 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 |
|---|---|---|---|---|---|
| 620 | 2 | 100% | 2001 | none | Central and Mountain |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in St. John
2 carriers hold the 2 exchanges assigned to St. John's rate center. Nex-tech Wireless, LLC has the most, with 1. 1 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in St. John can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Nex-tech Wireless, LLC | 1 | 50% |
| United Tel of Eastern Kansas d/b/a Centurylink | 1 | 50% |
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. John
These are the central office codes NANPA records for St. John. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2005. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 620 | 377, 549 |
Source: NANPA utilized central office code file.
How local numbers work in St. John
NANPA ties every exchange to a rate center. For St. John that is ST JOHN, so a number from one of these exchanges reads as local to people in and around St. John.
New local numbers are drawn from carrier inventory, so the exact 620 numbers available change over time; porting an existing number is free.
Who does business near St. John
St. John is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 76,139 business establishments in Kansas in 2023, employing 1,248,825 people. The largest sectors by establishment count are retail trade (9,580), health care and social assistance (9,075), and other services (except public administration) (8,071).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 2,231 | 47,993 | 21.5 |
| Full-service restaurants | 2,197 | 45,439 | 20.7 |
| Insurance agencies and brokerages | 1,947 | 14,227 | 7.3 |
| Physician practices | 1,466 | 20,960 | 14.3 |
| Offices of real estate agents and brokers | 1,318 | 2,519 | 1.9 |
| Law offices | 1,139 | 5,586 | 4.9 |
| Residential remodelers | 1,068 | 3,880 | 3.6 |
| Plumbing, heating and air-conditioning contractors | 1,028 | 11,412 | 11.1 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in St. John
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 St. John 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.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in Kansas, 16 users on RingCentral RingEX Core come to $480.00 a month and on Ooma Office Pro $399.20, at month-to-month list prices checked September 28, 2026. Callata comes to $319.00 a month for 16 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 | $319.00 | $3,828.00 |
| Quo (Starter) | $19.00 per user | $304.00 | $3,648.00 |
| Nextiva (Core) | $23.00 per user | $368.00 | $4,416.00 |
| Ooma (Office Pro) | $24.95 per user | $399.20 | $4,790.40 |
| Dialpad (Standard) | $27.00 per user | $432.00 | $5,184.00 |
| RingCentral (RingEX Core) | $30.00 per user | $480.00 | $5,760.00 |
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. John, KS?
620. All exchanges NANPA lists for St. John are in 620.
How many phone companies have exchanges in St. John?
2, holding 2 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing St. John 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. John?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 16 users come to $319.00 a month. For comparison, 16 users on RingCentral RingEX Core list at $480.00 a month (checked September 28, 2026).