Get a local business phone number in Fenton, MO

Area codes in Fenton

Fenton city is a Census place in St. Louis County, Missouri, with an estimated 4,073 residents in 2024. All 16 exchanges NANPA lists for its rate center are in area code 636. Fenton 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.

Who holds Fenton phone exchanges

6 carriers hold the 16 exchanges assigned to Fenton's rate center. Southwestern Bell has the most, with 6. 12 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Fenton can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Fenton

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Fenton. The earliest assignment date recorded in the file for these codes is 2002. 1 of the 16 were assigned in 2020 or later.

When Fenton's exchanges were assigned

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

Rate centers and local calling in Fenton

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

Keeping an existing Fenton number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 636 when you pick it.

Who does business near Fenton

Fenton 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).

A Fenton 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.

If you already have a number in Fenton, 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 18 users, the rounded average establishment size in the St. Louis, MO-IL metro area. At list prices checked September 28, 2026, that is $449.10 a month on Ooma Office Pro and $540.00 on RingCentral RingEX Core. On Callata the same 18 people cost $359.00 a month, less than either per-seat plan.