The 337 Area Code: Complete Guide to Lafayette, Lake Charles, and Southwestern Louisiana

Introduction

The 337 area code covers southwestern Louisiana — a region defined by Cajun culture, oil and gas production, rice farming, and some of the most distinctive communities in the American South. Whether you are a business targeting the energy sector, a resident screening an incoming call, or someone looking to establish a Louisiana presence from anywhere in the country, this guide covers everything you need. By the end, you will know every parish and city in the 337 area code region, its time zone, its full history, the scam patterns that target local numbers, and exactly how to get a 337 phone number in minutes.

Key Takeaways

• The 337 area code covers southwestern Louisiana — anchored by Lafayette and Lake Charles — spanning the Acadiana region, the Cajun Heartland, and the Gulf Coast energy corridor.
• All cities in the 337 region operate in the Central Time Zone, running UTC−6 in winter and UTC−5 during Daylight Saving Time.
• Area code 337 was created in 2001 when it was split from area code 318, which had served all of Louisiana outside the New Orleans and Baton Rouge areas.
• Scammers actively spoof 337 numbers to target Louisiana residents and energy industry workers — recognizing the warning signs protects you.
• You do not need a Louisiana address to own a 337 number — virtual providers activate a local line in under five minutes, with no hardware or contract required.

What Is the 337 Area Code?

The 337 area code is a NANP (North American Numbering Plan) geographic area code assigned to southwestern Louisiana. It was created on February 3, 2001, when it was split from area code 318 to relieve number exhaustion in the region. The 337 footprint covers the Acadiana cultural region — a French-speaking Cajun and Creole heartland — as well as the Lake Charles industrial corridor and the Gulf Coast parishes along Louisiana's southwestern border.

Lafayette anchors the 337 region as the hub of Acadiana and the fourth-largest city in Louisiana. Lake Charles serves as the western anchor — a major petrochemical refining and liquefied natural gas (LNG) export center. Together, these two cities define the economic identity of the 337 area code: energy production, agricultural processing, and a deeply rooted French Louisiana cultural heritage.

337 Area Code Quick Facts

Where Is the 337 Area Code Located?

The 337 area code covers the southwestern quadrant of Louisiana, stretching from the Texas border in the west to the Atchafalaya Basin in the east, and from the Arkansas border parishes in the north to the Gulf of Mexico coastline in the south. It includes the Acadiana cultural region — also known as Cajun Country — and the Lake Charles industrial corridor.

Parishes Covered by the 337 Area Code

Major Cities in the 337 Coverage Area

For a look at another distinctive regional market, see our 360 area code guide.

What Time Zone Does the 337 Area Code Use?

Every city within the 337 area code operates in the Central Time Zone. During Central Standard Time — November through mid-March — clocks run at UTC−6. During Central Daylight Time — mid-March through November — the region moves to UTC−5.

For callers outside Louisiana, this offset matters. A 9 a.m. call from New York reaches 337 contacts at 8 a.m. their time. Anyone coordinating remote teams, offshore energy operations, or supply chain calls with Lafayette or Lake Charles contacts needs to account for the Central Time position to avoid connecting outside business hours.

The History of the 337 Area Code

Area code 337 was created on February 3, 2001, when it was split from area code 318. Before 2001, area code 318 served all of Louisiana outside the New Orleans area (504) and the Baton Rouge area (225). As mobile phone adoption surged through the 1990s and the oil and gas industry expanded its communications infrastructure, the 318 number pool became exhausted in the southwestern portion of the state.

The Louisiana Public Service Commission approved the creation of 337 to serve the southwestern parishes — including Lafayette, Lake Charles, and the Acadiana region — while 318 retained coverage of northern and central Louisiana (Shreveport, Monroe, Alexandria). The split took effect in 2001 with a permissive dialing period before mandatory 10-digit dialing was required for all local calls.

Louisiana Area Code Timeline

Why a Local 337 Number Matters for Your Business

A 337 area code number signals to every contact in southwestern Louisiana that your business is embedded in their region — not an anonymous national caller. In a market defined by offshore energy services, agricultural processing, healthcare, and a tight-knit Cajun community culture, that local signal carries exceptional weight.

Industries That Gain the Most from a 337 Presence

• Oil, gas, and energy services — The Lafayette–Lake Charles corridor is the operational backbone of the Gulf of Mexico offshore energy industry. A local 337 number builds instant credibility with oilfield operators, equipment suppliers, and LNG terminal contacts.
• Agriculture and food processing — Southwestern Louisiana produces rice, sugar cane, crawfish, and shrimp at an industrial scale. Vendors and buyers in these supply chains respond better to local numbers from familiar parishes.
• Healthcare and medical services — Lafayette General Health, Our Lady of Lourdes, and Lake Charles Memorial Hospital serve a large regional population. Local numbers improve patient and referral response rates throughout the region.
• Legal and financial services — The energy industry generates significant legal, accounting, and financial services activity. A 337 number communicates genuine regional knowledge to clients navigating oilfield contracts and Louisiana law.
• Real estate professionals — Lafayette and Lake Charles metro areas see active residential and commercial real estate markets driven by energy sector employment. Local agents build stronger trust using a familiar 337 number.

Businesses comparing energy-driven markets often also review our 413 area code guide.

How to Get a Virtual Phone Number from CallMama

CallMama is a global virtual phone number platform that gives you a real, NANP-registered 337 number without requiring a Louisiana address, a physical SIM, or any hardware. The platform includes HD voice, two-way SMS, voicemail-to-email transcription, and call forwarding — all starting at $1.99 per month with no hidden fees and no lock-in contract.

1. Visit callmama.com or download the app from the App Store or Google Play — it is free to install.
2. Create your free account — sign up with your email address. Verification takes under sixty seconds.
3. Choose a plan — select the virtual number plan that fits your call volume and budget, starting at $1.99/month.
4. Select your number — choose United States as the country, enter 337 as the area code, and browse available Louisiana numbers.
5. Add credit and activate — fund your account and your 337 phone number goes live immediately.
6. Configure your settings — set up call forwarding, voicemail routing, and SMS preferences in the dashboard.
7. Start making and receiving calls — your number works on any smartphone, tablet, or computer from day one.

Scam Calls and the 337 Area Code

The 337 area code is targeted by caller ID spoofing operations that exploit the trust locals place in a familiar southwestern Louisiana prefix. Scammers display local 337 numbers because residents, energy workers, and business owners are far more likely to answer a call from a familiar Cajun Country number than an unknown out-of-state line.

Common Scam Types in the 337 Region

How to Protect Yourself

• Verify independently before acting on any call that creates urgency or demands immediate payment.
• Never share personal, financial, or employment data with any unsolicited caller, regardless of how official they sound.
• Report scam calls to the Federal Trade Commission's FTC fraud report service.
• Register at donotcall.gov to reduce unwanted telemarketing volume over time.

337 Area Code vs. Neighboring Area Codes

Understanding how the 337 area code relates to surrounding Louisiana and Texas codes helps you identify the origin of any regional call at a glance.

Calls from 318 originate in northern Louisiana — Shreveport and Monroe. Calls from 225 come from the Baton Rouge metro. Calls from 504 are from New Orleans. Calls from 409 cross the state line from southeastern Texas. A 337 number is uniquely tied to the Acadiana and southwestern Louisiana coastal identity.

Conclusion

The 337 area code defines one of the most culturally distinctive and economically dynamic regions in the American South — a southwestern Louisiana corridor where Cajun heritage, Gulf Coast energy production, and agricultural abundance converge. This guide has covered the full picture: which parishes and cities fall within the 337 region, the Central Time Zone it operates in, its history from the 2001 split from 318, the scam patterns that target local numbers, and why a 337 phone number delivers immediate credibility across Lafayette's energy services market, Lake Charles's industrial corridor, and the broader Acadiana community.

Converting that knowledge into action is the clear next step. A virtual 337 number activates in minutes — no Louisiana address, no hardware, no long-term commitment — and positions your business inside a market where local identity and community trust are among the strongest in the country. Whether you serve offshore energy contractors, agricultural suppliers, healthcare clients, or real estate buyers across this vibrant southwestern Louisiana corridor, a 337 area code presence signals exactly the right thing: you are here, you are local, and you are ready to connect.