Get a local business phone number in Tremonton, UT

Tremonton area codes

Tremonton, in Box Elder County, Utah, had a Census-estimated population of 12,677 in July 2024. All 5 exchanges NANPA lists for its rate center are in area code 435. Tremonton is in the Mountain time zone.

According to NANPA's dialing-plan data, local calls within 435 are dialed as seven digits and toll calls as 1 plus ten digits.

Tremonton exchanges by carrier

4 carriers hold the 5 exchanges assigned to Tremonton's rate center. Citizens Telecom-utah d/b/a Frontier Comm of Ut has the most, with 2. 3 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Tremonton can come from any of these blocks; once it is yours, porting lets it move between providers.

Exchanges (NPA-NXX) assigned in Tremonton

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Tremonton. The earliest assignment date recorded in the file for these codes is 2006. 1 of the 5 were assigned in 2020 or later.

When Tremonton's exchanges were assigned

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

Rate centers and local calling in Tremonton

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

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

Businesses around Tremonton

Tremonton is part of the Brigham City, UT-ID micropolitan area, home to 69,096 people in 2024. County Business Patterns counted 1,432 business establishments in the Brigham City, UT-ID micropolitan area in 2023, employing 21,116 people. The largest sectors by establishment count are construction (252), retail trade (155), and health care and social assistance (153).

A Tremonton 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.

Porting a number you already use in Tremonton 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 15 users, the rounded average establishment size in the Brigham City, UT-ID micropolitan area. At list prices checked September 28, 2026, that is $374.25 a month on Ooma Office Pro and $450.00 on RingCentral RingEX Core. Callata comes to $299.00 a month for 15 users ($99 a month with 5 users included, then $20 per additional user), below both.