Area Code 641-355 located in CLEAR LAKE, CERRO GORDO, IA, more detail is as below. Place NPA (Numbering Plan Area) : 641 NXX (Local Number Prefix) : 355 City : CLEAR LAKE County : CERRO GORDO State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 19033 LATA (Local Access Transport Area) : 632 Rate Center : CLEAR LAKE ZIP Code Count : 7 ZIP Code Frequency : 100 ZIP Code : 50428 Other Information NPANXX : 641355 Switch CLLI (Common Language Location Identifier) : CLLKIAXODS0 MSA CBSA (Core Based Statistical Area) : Mason City, IA MSA CBSA Code (Core Based Statistical Area) : 32380 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CLEAR LAKE INDEPENDENT TELEPHONE CO. OCN (Operating Company Number) : 1132 Coverage Area Name : CLEAR LAKE Latitude : 43.1359 Longitude : -93.3765 ‹ previous : 641-354 next › : 641-357 Telephone Number List 641-355-0000 ~ 641-355-9999