Area Code 857-203 located in JAMAICA PLAIN, SUFFOLK, MA, more detail is as below. Place NPA (Numbering Plan Area) : 857 NXX (Local Number Prefix) : 203 City : JAMAICA PLAIN County : SUFFOLK State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 2005-06-25 FIPS (Federal Information Processing Standards) : 25025 LATA (Local Access Transport Area) : 128 Rate Center : JAMAICA PL ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02130 Other Information NPANXX : 857203 Switch CLLI (Common Language Location Identifier) : WRXBMABEDS0 MSA CBSA (Core Based Statistical Area) : Boston-Cambridge-Quincy, MA-NH MSA CBSA Code (Core Based Statistical Area) : 14460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : VERIZON NEW ENGLAND INC. OCN (Operating Company Number) : 9102 Coverage Area Name : JAMAICA PLAIN Latitude : 42.3111 Longitude : -71.1098 ‹ previous : 857-202 next › : 857-204 Telephone Number List 857-203-0000 ~ 857-203-9999