Get a local business phone number in Sullivan, MO

What area code is Sullivan, MO?

Sullivan, in Franklin County, Missouri, had a Census-estimated population of 6,925 in July 2024. All 3 exchanges NANPA lists for its rate center are in area code 573. 573 is part of an overlay with 235, so a new local number in Sullivan may carry any of those codes depending on which have numbers available. Sullivan is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 573 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Who holds Sullivan phone exchanges

2 carriers hold the 3 exchanges assigned to Sullivan's rate center. Fidelity Telephone, LLC has the most, with 2. 3 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.

Local prefixes for Sullivan

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Sullivan's rate center (SULLIVAN). The earliest assignment date recorded in the file for these codes is 2020. 1 of the 3 were assigned in 2020 or later.

Rate centers and local calling in Sullivan

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

New local numbers are drawn from carrier inventory, so the exact 573 numbers available change over time; porting an existing number is free.

Who does business near Sullivan

Sullivan 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).

Setting up a Sullivan business line

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 Sullivan, 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.