Area Code 620-402 located in WINFIELD, COWLEY, KS, more detail is as below. Place NPA (Numbering Plan Area) : 620 NXX (Local Number Prefix) : 402 City : WINFIELD County : COWLEY State : KS (Kansas) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 20035 LATA (Local Access Transport Area) : 532 Rate Center : WINFIELD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 67156 Other Information NPANXX : 620402 Switch CLLI (Common Language Location Identifier) : WCHUKSHHDS0 MSA CBSA (Core Based Statistical Area) : Winfield, KS MSA CBSA Code (Core Based Statistical Area) : 49060 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : TELCOVE INVESTMENT, LLC - KS OCN (Operating Company Number) : 7187 Coverage Area Name : WINFIELD Latitude : 37.2409 Longitude : -96.9945 ‹ previous : 620-401 next › : 620-403 Telephone Number List 620-402-0000 ~ 620-402-9999