Area Code 240-201 located in RIDGE, SAINT MARYS, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 201 City : RIDGE County : SAINT MARYS State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 24037 LATA (Local Access Transport Area) : 236 Rate Center : RIDGE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 20680 Other Information NPANXX : 240201 County Population : 0 Switch CLLI (Common Language Location Identifier) : RSTNVA31DS0 MSA CBSA (Core Based Statistical Area) : Lexington Park, MD MSA CBSA Code (Core Based Statistical Area) : 30500 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : PEERLESS NETWORK OF ILLINOIS, LLC - IL OCN (Operating Company Number) : 063E Coverage Area Name : RIDGE Latitude : 38.1151 Longitude : -76.3665 ‹ previous : 240-200 next › : 240-203 Telephone Number List 240-201-0000 ~ 240-201-9999