Area Code 337: Lafayette, Louisiana
337 is a telephone area code serving Louisiana, including Lafayette, Lake Charles. It is part of the North American Numbering Plan and is dialed with the country code +1.
Numbers beginning with 337 are located in Louisiana, United States (NANP region: Southwest). The code covers Lafayette, Lake Charles.
How to Dial Area Code 337
| Calling from | What to dial |
|---|---|
| Anywhere in the US or Canada | 1 337 XXX-XXXX (10-digit dialing: 337 + 7-digit number) |
| Local call inside the same area code | 7-digit number in most areas; 10 digits where an overlay code is active |
| From the UK or Europe | 00 1 337 XXX XXXX |
| From Australia | 0011 1 337 XXX XXXX |
| From a mobile phone anywhere | +1 337 XXX XXXX |
Whatever country you are calling from, the + symbol replaces the exit code. Save the contact as +1 337 XXXXXXX and it will dial correctly from any phone in the world.
Time Zone for Area Code 337
Calls to a 337 number ring in the America/Chicago time zone, standard offset UTC-06:00. Daylight saving time applies here, so the offset moves forward one hour from March to November.
Cities and Communities Served by 337
The following places fall inside the 337 calling area:
Other Area Codes in Louisiana
These codes also serve Louisiana. Area codes are assigned by the North American Numbering Plan Administration (NANPA).
See all 5 area codes in Louisiana →
Frequently Asked Questions
Where is area code 337?
Area code 337 is in Louisiana, United States. It covers Lafayette, Lake Charles.
What time zone is area code 337 in?
Area code 337 rings in the America/Chicago time zone (UTC-06:00 standard).
Do I need to dial 1 before area code 337?
Yes, for a long-distance call inside the US and Canada you dial 1 first, then 337, then the seven-digit number. The 1 is the North American long-distance trunk prefix — it is not the country code. From outside North America you dial your exit code then 1 then 337.
Is area code 337 toll-free?
No. 337 is a standard geographic area code, so normal long-distance rates apply unless your plan includes them. Toll-free NANP codes are 800, 833, 844, 855, 866, 877 and 888.