Area Code 337-355 located in FRANKLIN, SAINT MARY, LA, more detail is as below. Place NPA (Numbering Plan Area) : 337 NXX (Local Number Prefix) : 355 City : FRANKLIN County : SAINT MARY State : LA (Louisiana) NXX Use Type : Landline NXX Intro Version : 2002-08-04 FIPS (Federal Information Processing Standards) : 22101 LATA (Local Access Transport Area) : 488 Rate Center : FRANKLIN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 70538 Other Information NPANXX : 337355 County Population : 0 Switch CLLI (Common Language Location Identifier) : LFYTLACLH03 MSA CBSA (Core Based Statistical Area) : Morgan City, LA MSA CBSA Code (Core Based Statistical Area) : 34020 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : ADVANCED TEL INC. - LA OCN (Operating Company Number) : 8839 Coverage Area Name : FRANKLIN Latitude : 29.7936 Longitude : -91.5006 ‹ previous : 337-354 next › : 337-356 Telephone Number List 337-355-0000 ~ 337-355-9999