Get a local business phone number in Belle Fourche, SD

What area code is Belle Fourche, SD?

Belle Fourche city is a Census place in Butte County, South Dakota, with an estimated 5,855 residents in 2024. All 7 exchanges NANPA lists for its rate center are in area code 605. Belle Fourche 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.

Belle Fourche exchanges by carrier

6 carriers hold the 7 exchanges assigned to Belle Fourche's rate center. Cellco Partnership d/b/a Verizon Wireless - SD has the most, with 2. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Belle Fourche can come from any of these blocks; once it is yours, porting lets it move between providers.

Belle Fourche phone prefixes

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Belle Fourche's rate center (BELLEFORCH). The earliest assignment date recorded in the file for these codes is 2006. 1 of the 7 were assigned in 2020 or later.

When Belle Fourche's exchanges were assigned

Assignment dates show when each block of Belle Fourche numbers was added to the local supply.

What makes a number local to Belle Fourche

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Belle Fourche's numbers are rated to the BELLEFORCH rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Belle Fourche number.

If your business already has a Belle Fourche number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Businesses around Belle Fourche

Belle Fourche is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 29,106 business establishments in South Dakota in 2023, employing 383,805 people. The largest sectors by establishment count are retail trade (3,838), construction (3,802), and other services (except public administration) (2,986).

Business phone service in Belle Fourche

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 Belle Fourche, 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 South Dakota. 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.