CallataGuidesGet a local business phone number in Cold Spring, MN
Cold Spring's area code, prefixes and carriers from NANPA records, and how to put a Cold Spring number in front of your customers.
- Area code
- 320
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 4,326Census 2024 est.
What area code is Cold Spring, MN?
Cold Spring city is a Census place in Stearns County, Minnesota, with an estimated 4,326 residents in 2024. All 4 exchanges NANPA lists for its rate center are in area code 320. Cold Spring is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 320 are dialed as seven digits and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 320 | 4 | 100% | 1996 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Cold Spring phone exchanges
4 carriers hold the 4 exchanges assigned to Cold Spring's rate center. Onvoy, LLC - MN has the most, with 1. 4 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 |
|---|---|---|
| Onvoy, LLC - MN | 1 | 25% |
| Onvoy Spectrum, LLC | 1 | 25% |
| Qwest Corporation | 1 | 25% |
| Skye Telecom LLC d/b/a Skyetel | 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.
Cold Spring phone prefixes
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Cold Spring's rate center (COLDSPRING). The earliest assignment date recorded in the file for these codes is 2007. 1 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 320 | 348, 600, 685, 686 |
Source: NANPA utilized central office code file.
When Cold Spring's exchanges were assigned
The table groups Cold Spring's exchanges by the decade NANPA recorded them as assigned.
| 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.
How local numbers work in Cold Spring
What a caller sees as "local" is the area code plus prefix. In Cold Spring, those come from the COLDSPRING rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 320 numbers available change over time; porting an existing number is free.
Who does business near Cold Spring
Cold Spring is part of the St. Cloud, MN metro area, home to 206,000 people in 2024. County Business Patterns counted 5,449 business establishments in the St. Cloud, MN metro area in 2023, employing 101,067 people. The largest sectors by establishment count are retail trade (749), construction (724), and health care and social assistance (669).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 149 | 3,103 | 20.8 |
| Full-service restaurants | 127 | 2,746 | 21.6 |
| Insurance agencies and brokerages | 126 | 571 | 4.5 |
| Plumbing, heating and air-conditioning contractors | 85 | 1,780 | 20.9 |
| Landscaping services | 85 | 267 | 3.1 |
| Residential remodelers | 84 | 307 | 3.7 |
| Offices of real estate agents and brokers | 80 | 107 | 1.3 |
| General automotive repair shops | 79 | 387 | 4.9 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Cold Spring business line
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 Cold Spring 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 St. Cloud, MN 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 Cold Spring, MN?
320. All exchanges NANPA lists for Cold Spring are in 320.
How many phone companies have exchanges in Cold Spring?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Cold Spring 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 Cold Spring?
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).