Area code 337 covers Lafayette and surrounding areas in Louisiana. It was activated in 1999 as an overlay of area code 318. For the full picture, see all Louisiana area codes.
| State | Louisiana |
|---|---|
| Primary city | Lafayette |
| Cities also served | Lafayette, Lake Charles, New Iberia, Opelousas, Sulphur, Crowley, Leesville, Abbeville |
| Time zone | Central (UTC-6 / UTC-5 DST) |
| Year established | October 11, 1999 |
| Original 1947 NPA? | No |
| Parent code | 318 |
| Overlay codes | None |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 337
Area code 337 serves Acadiana (southwestern Louisiana), including Lafayette Parish, Calcasieu Parish, St. Landry Parish, Iberia Parish, Vermilion Parish, and surrounding parishes, including the following cities and communities:
- Lafayette
- Lake Charles
- New Iberia
- Opelousas
- Sulphur
- Crowley
- Leesville
- Abbeville
Nearby area codes covering the same broader region include: 318, 225, 504, 985.
How to Get a 337 Phone Number
There are three ways to get a phone number with the 337 area code, each suited to a different need:
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Browse 337 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 337 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 337 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 337 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 337 number. If you already have a 337 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of Louisiana sometimes can’t accept inbound ports of 337 numbers due to 911 routing rules.
Looking for a 337 number? 212areacode.com offers premium 337 numbers for Lafayette, Louisiana — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 337 numbers →
Frequently Asked Questions
Is the 337 area code still in use?
Yes. 337 is actively assigned to new phone lines in Acadiana (southwestern Louisiana), including Lafayette Parish, Calcasieu Parish, St. Landry Parish, Iberia Parish, Vermilion Parish, and surrounding parishes.
What is the parent area code of 337?
Area code 337 is an overlay of 318. Both codes serve the same region of Louisiana.
Can I get a 337 number if I don't live in Louisiana?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 337 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 337 a scam area code?
No. 337 is a legitimate, active area code for Acadiana (southwestern Louisiana), including Lafayette Parish, Calcasieu Parish, St. Landry Parish, Iberia Parish, Vermilion Parish, and surrounding parishes. Like any area code, scammers occasionally spoof 337 caller IDs, but the code itself is heavily used by real Louisiana businesses, government offices, and residents.
What cities are covered by the 337 area code?
Area code 337 covers southwestern Louisiana, including Lafayette, Lake Charles, New Iberia, Opelousas, Sulphur, Crowley, Leesville, and Abbeville, across 16 parishes.
When did area code 337 go into service?
Area code 337 went into service on October 11, 1999, as a geographic split from area code 318, which had served most of Louisiana west of the Mississippi River since 1957.
Does area code 337 have any overlays?
No. As of 2026, area code 337 has no overlay codes and is the sole area code serving southwestern Louisiana. Ten-digit dialing was adopted in October 2021 due to the 988 Suicide & Crisis Lifeline designation.
What time zone is the 337 area code in?
Area code 337 operates on Central Time (CT) — UTC-6 standard, UTC-5 during Daylight Saving Time.
