337 area code
Lafayette area, Central Time.Area code 337 covers Lafayette, Lake Charles, New Iberia and 72 more places in Louisiana, on Central Time.
Right now in Lafayette
Central Time (CST, UTC-6; CDT, UTC-5 in summer)
Calling hours: Mon to Sat, 8 AM to 8 PM · Sun, no calls (Louisiana law)
Small talk
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Where 337 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 337 has 75. Each one's share is how many 337 numbers start there. Its biggest metro area is Baton Rouge, LA.
- Lafayette22%
- Lake Charles13%
- New Iberia5%
- Leesville4%
- Opelousas4%
- Abbeville3%
- Crowley3%
- Sulphur3%
- DeRidder2%
Also: Broussard, Jennings, Breaux Bridge, Carencro, Eunice, Franklin, St. Martinville, Ville Platte, Jeanerette, Youngsville, Baldwin, Carlyss + 54 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 337 number?
Sales calls to homes and cell phones have legal hours, set by Louisiana law. Hold every 337 number to them, since you can't tell a work line from a personal cell.
What applies to 337Mon to Sat, 8 AM to 8 PM · Sun, no calls
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Louisiana lawMon to Sat, 8 AM to 8 PM · Sun, no callsNo calls on legal holidays either, which the tool doesn't track.LPSC General Order R-35852 (Mar. 10, 2021), §V(A)(2) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 337 area code
337 went into service on October 11, 1999, split off from 318. Local calls take all 10 digits.
- 1999337 starts
Source: NANPA area code database
Calling a list of 337 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
337 area code FAQ
What area code is 337?
337 is a Louisiana area code for Lafayette, Lake Charles, New Iberia, Leesville and 71 more places.
What time zone is the 337 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
What are the calling hours for 337 numbers?
Mon to Sat, 8 AM to 8 PM · Sun, no calls, local time, under Louisiana law.
When did the 337 area code start?
On October 11, 1999. It was split from 318.
Calling 337 numbers? Reach more of them.
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