Area Code 787-657 located in RIO GRANDE, RIO GRANDE, PR, more detail is as below. Place NPA (Numbering Plan Area) : 787 NXX (Local Number Prefix) : 657 City : RIO GRANDE County : RIO GRANDE State : PR (Puerto Rico) NXX Use Type : Landline NXX Intro Version : 1998-08-14 FIPS (Federal Information Processing Standards) : 72119 LATA (Local Access Transport Area) : 820 Rate Center : RIO GRANDE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 00745 Other Information NPANXX : 787657 Switch CLLI (Common Language Location Identifier) : GUYNPR05DS0 MSA CBSA (Core Based Statistical Area) : San Juan-Caguas-Guaynabo, PR MSA CBSA Code (Core Based Statistical Area) : 41980 Time Zone : Atlantic (GMT -04:00) Observes Daylight Saving Time : No Company : CENTENNIAL PUERTO RICO OPERATIONS CORP. - PR OCN (Operating Company Number) : 8305 Coverage Area Name : RIO GRANDE Latitude : 18.3803 Longitude : -65.8347 ‹ previous : 787-656 next › : 787-658 Telephone Number List 787-657-0000 ~ 787-657-9999