Area Code 318-331 located in MONROE, OUACHITA, LA, more detail is as below. Place NPA (Numbering Plan Area) : 318 NXX (Local Number Prefix) : 331 City : MONROE County : OUACHITA State : LA (Louisiana) NXX Use Type : Wireless NXX Intro Version : 1994-09-11 FIPS (Federal Information Processing Standards) : 22073 LATA (Local Access Transport Area) : 486 Rate Center : MONROE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 71202 Other Information NPANXX : 318331 County Population : 0 Switch CLLI (Common Language Location Identifier) : MONRLACTCM1 MSA CBSA (Core Based Statistical Area) : Monroe, LA MSA CBSA Code (Core Based Statistical Area) : 33740 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA OCN (Operating Company Number) : 6505 Coverage Area Name : MONROE Latitude : 32.5035 Longitude : -92.1135 ‹ previous : 318-331 next › : 318-332 Telephone Number List 318-331-0000 ~ 318-331-9999