CallataGuidesGet a local business phone number in Mountain Lake, MN
Mountain Lake's area code, prefixes and carriers from NANPA records, and how to put a Mountain Lake number in front of your customers.
- Area code
- 507
- Exchanges
- 2NANPA-assigned
- Carriers
- 2
- Population
- 1,944Census 2024 est.
Mountain Lake area codes
Mountain Lake, in Cottonwood County, Minnesota, had a Census-estimated population of 1,944 in July 2024. All 2 exchanges NANPA lists for its rate center are in area code 507. 507 is part of an overlay with 924, so a new local number in Mountain Lake may carry any of those codes depending on which have numbers available. Mountain Lake is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 507 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 |
|---|---|---|---|---|---|
| 507 | 2 | 100% | 1954 | 924 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Mountain Lake exchanges by carrier
2 carriers hold the 2 exchanges assigned to Mountain Lake's rate center. Citizens Telecom CO Mn-frontier Citizens Com-mn has the most, with 1. 2 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Citizens Telecom CO Mn-frontier Citizens Com-mn | 1 | 50% |
| MCC Telephony of Minnesota, LLC - MN | 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.
Mountain Lake phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Mountain Lake. The earliest assignment date recorded in the file for these codes is 2005. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 507 | 427, 636 |
Source: NANPA utilized central office code file.
How local numbers work in Mountain Lake
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Mountain Lake's numbers are rated to the MOUNTAINLK rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Mountain Lake number.
New local numbers are drawn from carrier inventory, so the exact 507 numbers available change over time; porting an existing number is free.
The local business market
Mountain Lake is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 154,455 business establishments in Minnesota in 2023, employing 2,803,410 people. The largest sectors by establishment count are health care and social assistance (19,985), retail trade (17,727), and construction (17,568).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 3,879 | 87,230 | 22.5 |
| Limited-service restaurants | 3,848 | 75,564 | 19.6 |
| Offices of real estate agents and brokers | 3,247 | 6,341 | 2.0 |
| Insurance agencies and brokerages | 3,131 | 16,007 | 5.1 |
| Residential remodelers | 2,988 | 9,125 | 3.1 |
| Landscaping services | 2,397 | 13,696 | 5.7 |
| Law offices | 2,052 | 15,663 | 7.6 |
| Dental offices | 1,884 | 17,650 | 9.4 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Mountain Lake
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 Mountain Lake, 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 Minnesota, 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 Mountain Lake, MN?
507. All exchanges NANPA lists for Mountain Lake are in 507.
How many phone companies have exchanges in Mountain Lake?
2, holding 2 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Mountain Lake 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 Mountain Lake?
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).