Area Code 641-224 located in SIGOURNEY, KEOKUK, IA, more detail is as below. Place NPA (Numbering Plan Area) : 641 NXX (Local Number Prefix) : 224 City : SIGOURNEY County : KEOKUK State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 2002-02-13 FIPS (Federal Information Processing Standards) : 19107 LATA (Local Access Transport Area) : 632 Rate Center : SIGOURNEY ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 52591 Other Information NPANXX : 641224 Switch CLLI (Common Language Location Identifier) : SGRNIAAH1MD 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 : SIGOURNEY Latitude : 41.3412 Longitude : -92.1983 ‹ previous : 641-223 next › : 641-225 Telephone Number List 641-224-0000 ~ 641-224-9999