Area Code 301-976 located in CAPITOL HEIGHTS, PRINCE GEORGES, MD, more detail is as below. Place NPA (Numbering Plan Area) : 301 NXX (Local Number Prefix) : 976 City : CAPITOL HEIGHTS County : PRINCE GEORGES State : MD (Maryland) NXX Intro Version : 10/17/2005 FIPS (Federal Information Processing Standards) : 24033 Rate Center : WSHNGTNZN5 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 20743 Other Information NPANXX : 301976 County Population : 0 Switch CLLI (Common Language Location Identifier) : LARLMDEH00T MSA CBSA (Core Based Statistical Area) : Washington-Arlington-Alexandria, DC-VA-MD-WV MSA CBSA Code (Core Based Statistical Area) : 47900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : BALTIMORE-WASHINGTON TELEPHONE BWT OCN (Operating Company Number) : 8697 Latitude : None Longitude : None ‹ previous : 301-975 next › : 301-977 Telephone Number List 301-976-0000 ~ 301-976-9999