Get a local business phone number in Great Falls, MT

What area code is Great Falls, MT?

Great Falls, in Cascade County, Montana, had a Census-estimated population of 60,013 in July 2024. All 37 exchanges NANPA lists for its rate center are in area code 406. Great Falls is in the Mountain time zone.

According to NANPA's dialing-plan data, local calls within 406 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Phone carriers in Great Falls

18 carriers hold the 37 exchanges assigned to Great Falls's rate center. Qwest Corporation has the most, with 11. 24 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.

Local prefixes for Great Falls

These are the central office codes NANPA records for Great Falls. 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.

When Great Falls's exchanges were assigned

The table groups Great Falls's exchanges by the decade NANPA recorded them as assigned.

How local numbers work in Great Falls

NANPA ties every exchange to a rate center. For Great Falls that is GREATFALLS, so a number from one of these exchanges reads as local to people in and around Great Falls.

New local numbers are drawn from carrier inventory, so the exact 406 numbers available change over time; porting an existing number is free.

Who does business near Great Falls

Great Falls is part of the Great Falls, MT metro area, home to 84,523 people in 2024. County Business Patterns counted 2,472 business establishments in the Great Falls, MT metro area in 2023, employing 30,050 people. The largest sectors by establishment count are health care and social assistance (347), retail trade (321), and construction (290).

Business phone service in Great Falls

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 Great Falls 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.

A 12-person team is the benchmark here, the rounded average establishment size in the Great Falls, MT metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $360.00 a month and Ooma Office Pro $299.40. Callata comes to $239.00 a month for 12 users ($99 a month with 5 users included, then $20 per additional user), below both.