Area Code 217-538 located in FILLMORE, MONTGOMERY, IL, more detail is as below. Place NPA (Numbering Plan Area) : 217 NXX (Local Number Prefix) : 538 City : FILLMORE County : MONTGOMERY State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17135 LATA (Local Access Transport Area) : 976 Rate Center : FILLMORE ZIP Code Count : 300 ZIP Code Frequency : 75 ZIP Code : 62032 Other Information NPANXX : 217538 County Population : 0 Switch CLLI (Common Language Location Identifier) : FLMRILXCRS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL OCN (Operating Company Number) : 1183 Coverage Area Name : FILLMORE Latitude : 39.1206 Longitude : -89.2791 ‹ previous : 217-538 next › : 217-539 Telephone Number List 217-538-0000 ~ 217-538-9999