Area Code 409-205 located in JEFFERSON, JEFFERSON, TX, more detail is as below. Place NPA (Numbering Plan Area) : 409 NXX (Local Number Prefix) : 205 City : JEFFERSON County : JEFFERSON State : TX (Texas) NXX Intro Version : 6/18/2013 Rate Center : SABINEPASS ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 409205 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Latitude : None Longitude : None ‹ previous : 409-204 next › : 409-206 Telephone Number List 409-205-0000 ~ 409-205-9999