Get a local business phone number in Belleville, IL

Belleville area codes

Belleville city is a Census place in St. Clair County, Illinois, with an estimated 40,560 residents in 2024. NANPA lists 43 exchanges for its rate center across 2 area codes; 618 has the most (31, 72%). 618 is part of an overlay with 730, so a new local number in Belleville may carry any of those codes depending on which have numbers available. Belleville is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 618 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Belleville exchanges by carrier

9 carriers hold the 43 exchanges assigned to Belleville's rate center. Illinois Bell Tel CO has the most, with 16. 33 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Belleville phone prefixes

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Belleville. The earliest assignment date recorded in the file for these codes is 2001. 17 of the 43 were assigned in 2020 or later.

When Belleville's exchanges were assigned

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

What makes a number local to Belleville

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

New local numbers are drawn from carrier inventory, so the exact 618 numbers available change over time; porting an existing number is free.

Businesses around Belleville

Belleville 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 Belleville number on Callata

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 Belleville, 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.