Area Code 217-931 located in SPRINGFIELD, SANGAMON, IL, more detail is as below. Place NPA (Numbering Plan Area) : 217 NXX (Local Number Prefix) : 931 City : SPRINGFIELD County : SANGAMON State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 4/2/2009 FIPS (Federal Information Processing Standards) : 17167 LATA (Local Access Transport Area) : 374 Rate Center : SPRINGFLD ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 62702 Other Information NPANXX : 217931 County Population : 0 MSA CBSA (Core Based Statistical Area) : Springfield, IL MSA CBSA Code (Core Based Statistical Area) : 44100 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEUTRAL TANDEM-ILLINOIS, LLC - IL OCN (Operating Company Number) : 505B Coverage Area Name : SPRINGFIELD Latitude : 39.7984 Longitude : -89.6484 ‹ previous : 217-930 next › : 217-932 Telephone Number List 217-931-0000 ~ 217-931-9999