Get a local business phone number in Sulphur, LA

Sulphur area codes

Sulphur city is a Census place in Calcasieu Parish, Louisiana, with an estimated 20,572 residents in 2024. All 15 exchanges NANPA lists for its rate center are in area code 337. Sulphur is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 337 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Sulphur exchanges by carrier

7 carriers hold the 15 exchanges assigned to Sulphur's rate center. Bellsouth Telecomm INC d/b/a South Central Bell Tel has the most, with 5. 9 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.

Exchanges (NPA-NXX) assigned in Sulphur

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Sulphur's rate center (SULPHUR). The earliest assignment date recorded in the file for these codes is 2001. 2 of the 15 were assigned in 2020 or later.

When Sulphur's exchanges were assigned

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

Rate centers and local calling in Sulphur

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

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

Businesses around Sulphur

Sulphur is part of the Lake Charles, LA metro area, home to 243,000 people in 2024. County Business Patterns counted 5,463 business establishments in the Lake Charles, LA metro area in 2023, employing 84,232 people. The largest sectors by establishment count are retail trade (895), health care and social assistance (668), and professional, scientific, and technical services (564).

A Sulphur number on Callata

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in Sulphur 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.

A 15-person team is the benchmark here, the rounded average establishment size in the Lake Charles, LA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $450.00 a month and Ooma Office Pro $374.25. Callata comes to $299.00 a month for 15 users ($99 a month with 5 users included, then $20 per additional user), below both.