CallataGuidesGet a local business phone number in Vermillion, SD
Vermillion's area code, prefixes and carriers from NANPA records, and how to put a Vermillion number in front of your customers.
- Area code
- 605
- Exchanges
- 10NANPA-assigned
- Carriers
- 7
- Population
- 11,877Census 2024 est.
What area code is Vermillion, SD?
Vermillion city is a Census place in Clay County, South Dakota, with an estimated 11,877 residents in 2024. All 10 exchanges NANPA lists for its rate center are in area code 605. Vermillion is in the Central and Mountain time zone.
According to NANPA's dialing-plan data, local calls within 605 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 |
|---|---|---|---|---|---|
| 605 | 10 | 100% | 1947 | none | Central and Mountain |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Vermillion exchanges by carrier
7 carriers hold the 10 exchanges assigned to Vermillion's rate center. Qwest Corporation has the most, with 3. 7 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 |
|---|---|---|
| Qwest Corporation | 3 | 30% |
| Cellco Partnership d/b/a Verizon Wireless - SD | 2 | 20% |
| New Cingular Wireless PCS, LLC - Il | 1 | 10% |
| Midcontinent Communications. - SD | 1 | 10% |
| Clarity Telecom, LLC d/b/a Bluepeak | 1 | 10% |
| Aerial Communications, INC. | 1 | 10% |
| Paetec Itel, LLC | 1 | 10% |
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.
Vermillion phone prefixes
These are the central office codes NANPA records for Vermillion. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 605 | 202, 624, 638, 658, 659, 670, 672, 675, 677, 741 |
Source: NANPA utilized central office code file.
Rate centers and local calling in Vermillion
What a caller sees as "local" is the area code plus prefix. In Vermillion, those come from the VERMILLION rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 605 numbers available change over time; porting an existing number is free.
Who does business near Vermillion
Vermillion is part of the Vermillion, SD micropolitan area, home to 15,245 people in 2024. County Business Patterns counted 298 business establishments in the Vermillion, SD micropolitan area in 2023, employing 3,742 people. The largest sectors by establishment count are accommodation and food services (45), retail trade (44), and other services (except public administration) (37).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 13 | 288 | 22.2 |
| Hotels and motels | 9 | 102 | 11.3 |
| Limited-service restaurants | 9 | 192 | 21.3 |
| Insurance agencies and brokerages | 8 | 26 | 3.3 |
| Plumbing, heating and air-conditioning contractors | 5 | — | — |
| New single-family housing construction contractors | 5 | — | — |
| Drinking places | 5 | 64 | 12.8 |
| Chiropractic offices | 4 | — | — |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Vermillion number on Callata
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 Vermillion, 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.
The comparison below uses 13 users, the rounded average establishment size in the Vermillion, SD micropolitan area. At list prices checked September 28, 2026, that is $324.35 a month on Ooma Office Pro and $390.00 on RingCentral RingEX Core. On Callata the same 13 people cost $259.00 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 | $259.00 | $3,108.00 |
| Quo (Starter) | $19.00 per user | $247.00 | $2,964.00 |
| Nextiva (Core) | $23.00 per user | $299.00 | $3,588.00 |
| Ooma (Office Pro) | $24.95 per user | $324.35 | $3,892.20 |
| Dialpad (Standard) | $27.00 per user | $351.00 | $4,212.00 |
| RingCentral (RingEX Core) | $30.00 per user | $390.00 | $4,680.00 |
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 Vermillion, SD?
605. All exchanges NANPA lists for Vermillion are in 605.
How many phone companies have exchanges in Vermillion?
7, holding 10 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Vermillion 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 Vermillion?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 13 users come to $259.00 a month. For comparison, 13 users on RingCentral RingEX Core list at $390.00 a month (checked September 28, 2026).