Area Code 217-551 located in HAMILTON, HANCOCK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 217 NXX (Local Number Prefix) : 551 City : HAMILTON County : HANCOCK State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 4/4/2006 FIPS (Federal Information Processing Standards) : 17067 LATA (Local Access Transport Area) : 977 Rate Center : HAMILTON ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 62341 Other Information NPANXX : 217551 County Population : 0 Switch CLLI (Common Language Location Identifier) : MCMBILXDSMD Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL OCN (Operating Company Number) : 846F Coverage Area Name : HAMILTON Latitude : 40.3925 Longitude : -91.3423 ‹ previous : 217-550 next › : 217-552 Telephone Number List 217-551-0000 ~ 217-551-9999