Area Code 209-528 located in COULTERVILLE, MARIPOSA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 209 NXX (Local Number Prefix) : 528 City : COULTERVILLE County : MARIPOSA State : CA (California) NXX Use Type : Landline NXX Intro Version : 2000-01-14 FIPS (Federal Information Processing Standards) : 06043 LATA (Local Access Transport Area) : 738 Rate Center : WTFR DNPR ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 95311 Other Information NPANXX : 209528 County Population : 0 Switch CLLI (Common Language Location Identifier) : SKTNCA01X9Y Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : O1 COMMUNICATIONS, INC. - CA OCN (Operating Company Number) : 4129 Coverage Area Name : LA GRANGE Latitude : 37.7001 Longitude : -120.4160 ‹ previous : 209-528 next › : 209-529 Telephone Number List 209-528-0000 ~ 209-528-9999