Area Code 504-205 located in JEFFERSON, JEFFERSON, LA, more detail is as below. Place NPA (Numbering Plan Area) : 504 NXX (Local Number Prefix) : 205 City : JEFFERSON County : JEFFERSON State : LA (Louisiana) NXX Intro Version : 7/3/2013 Rate Center : LAFITTE ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 504205 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : METRO PCS, INC. OCN (Operating Company Number) : 5562 Latitude : None Longitude : None ‹ previous : 504-202 next › : 504-206 Telephone Number List 504-205-0000 ~ 504-205-9999