Get a local business phone number in Troy, MI

Troy area codes

Troy city is a Census place in Oakland County, Michigan, with an estimated 89,209 residents in 2024. NANPA lists 67 exchanges for its rate center across 2 area codes; 248 has the most (61, 91%). 248 is part of an overlay with 947, so a new local number in Troy may carry any of those codes depending on which have numbers available. Troy is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 248 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Who holds Troy phone exchanges

15 carriers hold the 67 exchanges assigned to Troy's rate center. Michigan Bell Tel CO has the most, with 18. 47 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.

Troy phone prefixes

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Troy. The earliest assignment date recorded in the file for these codes is 2001. 5 of the 67 were assigned in 2020 or later.

When Troy's exchanges were assigned

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

Rate centers and local calling in Troy

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

Keeping an existing Troy number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 248 when you pick it.

Businesses around Troy

Troy is part of the Detroit-Warren-Dearborn, MI metro area, home to 4.4 million people in 2024. County Business Patterns counted 102,430 business establishments in the Detroit, MI metro area in 2023, employing 1,846,717 people. The largest sectors by establishment count are retail trade (14,016), health care and social assistance (13,890), and professional, scientific, and technical services (11,783).

Setting up a Troy business line

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.

Porting a number you already use in Troy 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.

An 18-person team is the benchmark here, the rounded average establishment size in the Detroit, MI metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $540.00 a month and Ooma Office Pro $449.10. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.