Area Code 309-873 located in GLADSTONE, HENDERSON, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 873 City : GLADSTONE County : HENDERSON State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17071 LATA (Local Access Transport Area) : 977 Rate Center : GULFPORT ZIP Code Count : 67 ZIP Code Frequency : 21 ZIP Code : 61437 Other Information NPANXX : 309873 County Population : 0 Switch CLLI (Common Language Location Identifier) : GLPTILXDRS0 MSA CBSA (Core Based Statistical Area) : Burlington, IA-IL MSA CBSA Code (Core Based Statistical Area) : 15460 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 : CARMAN Latitude : 40.8161 Longitude : -91.0290 ‹ previous : 309-872 next › : 309-873 Telephone Number List 309-873-0000 ~ 309-873-9999