Area Code 620-583 located in EUREKA, GREENWOOD, KS, more detail is as below. Place NPA (Numbering Plan Area) : 620 NXX (Local Number Prefix) : 583 City : EUREKA County : GREENWOOD State : KS (Kansas) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 20073 LATA (Local Access Transport Area) : 532 Rate Center : EUREKA ZIP Code Count : 1962 ZIP Code Frequency : 97 ZIP Code : 67045 Other Information NPANXX : 620583 Switch CLLI (Common Language Location Identifier) : EURKKSELRS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Coverage Area Name : EUREKA Latitude : 37.8185 Longitude : -96.2945 ‹ previous : 620-582 next › : 620-584 Telephone Number List 620-583-0000 ~ 620-583-9999