337 Area Code — Lafayette, LA
Area code 337 serves Lafayette and 3 other cities in Louisiana. Local time follows America/Chicago. It has no overlay codes.
- State
- Louisiana
- Primary city
- Lafayette
- Timezone
- America/Chicago
- In service since
- 1999
- Type
- Geographic
- Overlay codes
- None
Cities Served by 337
The 337 area code covers 4 cities and communities in Louisiana.
- Lafayette
- Lake Charles
- New Iberia
- Sulphur
About Area Code 337
Area code 337 is a North American Numbering Plan (NANP) area code that has been in service since 1999. It is administered by NANPA on behalf of the FCC and serves the Louisiana region anchored on Lafayette.
337 is currently a single-coverage geographic area code with no overlays. This means a 7-digit number in this area code is unique within its rate centers, though best-practice is always to dial the full 10-digit number when contacting a 337 line.
Mobile numbers in 337 are portable: a person who moved away from Lafayette may still carry a 337 mobile number on their device. If you receive an unexpected call from a 337 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Louisiana, you may also interact with neighbouring or overlay codes. See the related codes section below to explore the rest of Louisiana.
Other Louisiana Area Codes
Continue exploring the Louisiana numbering plan.
337 Area Code FAQ
Where is area code 337?
Area code 337 is located in Louisiana, primarily serving Lafayette and surrounding cities including Lake Charles, New Iberia, Sulphur. The region operates on CT (America/Chicago) time.
What state is 337 area code?
337 is a Louisiana area code. It was put into service in 1999 and has no overlay codes — it covers its geographic area exclusively.
Is 337 a scam area code?
337 is a legitimate North American area code allocated by NANPA to Louisiana. Like any geographic area code, scammers sometimes spoof 337 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 337 use?
Area code 337 operates on CT (America/Chicago). Numbers in this area code follow standard Louisiana time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 337 phone number?
Yes. Use the reverse lookup widget above to enter a full 337 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.