Area Code 337-540 located in LAKE CHARLES, CALCASIEU, LA, more detail is as below. Place NPA (Numbering Plan Area) : 337 NXX (Local Number Prefix) : 540 City : LAKE CHARLES County : CALCASIEU State : LA (Louisiana) NXX Use Type : Wireless NXX Intro Version : 2000-01-14 FIPS (Federal Information Processing Standards) : 22019 LATA (Local Access Transport Area) : 488 Rate Center : LK CHARLES ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 70611 Other Information NPANXX : 337540 County Population : 0 Switch CLLI (Common Language Location Identifier) : LKCHLADTCM1 MSA CBSA (Core Based Statistical Area) : Lake Charles, LA MSA CBSA Code (Core Based Statistical Area) : 29340 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : LAKE CHARLES Latitude : 30.2305 Longitude : -93.2145 ‹ previous : 337-538 next › : 337-542 Telephone Number List 337-540-0000 ~ 337-540-9999