Area Code 903-637 located in PITTSBURG, CAMP, TX, more detail is as below. Place NPA (Numbering Plan Area) : 903 NXX (Local Number Prefix) : 637 City : PITTSBURG County : CAMP State : TX (Texas) NXX Use Type : Wireless NXX Intro Version : 2000-10-31 FIPS (Federal Information Processing Standards) : 48063 LATA (Local Access Transport Area) : 554 Rate Center : PITTSBURG ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 75686 Other Information NPANXX : 903637 Switch CLLI (Common Language Location Identifier) : PSBGTXUNRS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : TELETOUCH COMMUNICATIONS, INC. OCN (Operating Company Number) : 6591 Coverage Area Name : PITTSBURG Latitude : 32.9977 Longitude : -94.9663 ‹ previous : 903-636 next › : 903-638 Telephone Number List 903-637-0000 ~ 903-637-9999