Area Code 641-209 located in FAIRFIELD, JEFFERSON, IA, more detail is as below. Place NPA (Numbering Plan Area) : 641 NXX (Local Number Prefix) : 209 City : FAIRFIELD County : JEFFERSON State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 19101 LATA (Local Access Transport Area) : 632 Rate Center : FAIRFIELD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 52556 Other Information NPANXX : 641209 Switch CLLI (Common Language Location Identifier) : FRFRIABNDS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : LOCAL TELEPHONE DATA SERVICES CORP. DBA LTDS CORP. OCN (Operating Company Number) : 2842 Coverage Area Name : FAIRFIELD Latitude : 41.0087 Longitude : -91.9678 ‹ previous : 641-208 next › : 641-210 Telephone Number List 641-209-0000 ~ 641-209-9999