Get a local business phone number in Troy, MO

What area code is Troy, MO?

Troy city is a Census place in Lincoln County, Missouri, with an estimated 14,963 residents in 2024. All 11 exchanges NANPA lists for its rate center are in area code 636. Troy is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 636 are dialed as seven digits and toll calls as 1 plus ten digits.

Troy exchanges by carrier

7 carriers hold the 11 exchanges assigned to Troy's rate center. T-mobile USA, INC. has the most, with 3. 10 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Troy can come from any of these blocks; once it is yours, porting lets it move between providers.

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 2002. 2 of the 11 were assigned in 2020 or later.

When Troy's exchanges were assigned

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

What makes a number local to 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.

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

Businesses around Troy

Troy is part of the St. Louis, MO-IL metro area, home to 2.8 million people in 2024. County Business Patterns counted 69,470 business establishments in the St. Louis, MO-IL metro area in 2023, employing 1,263,674 people. The largest sectors by establishment count are health care and social assistance (10,427), retail trade (8,095), and professional, scientific, and technical services (7,057).

Business phone service in Troy

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.

If you already have a number in Troy, 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.

An 18-person team is the benchmark here, the rounded average establishment size in the St. Louis, MO-IL 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. On Callata the same 18 people cost $359.00 a month, less than either per-seat plan.