Area Code 636-208 located in HERCULANEUM, JEFFERSON, MO, more detail is as below. Place NPA (Numbering Plan Area) : 636 NXX (Local Number Prefix) : 208 City : HERCULANEUM County : JEFFERSON State : MO (Missouri) NXX Use Type : Wireless NXX Intro Version : 2003-05-09 FIPS (Federal Information Processing Standards) : 29099 LATA (Local Access Transport Area) : 520 Rate Center : FSSCRSTLCY ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 63048 Other Information NPANXX : 636208 Switch CLLI (Common Language Location Identifier) : NWTPMOABG02 MSA CBSA (Core Based Statistical Area) : St. Louis, MO-IL MSA CBSA Code (Core Based Statistical Area) : 41180 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : CRYSTAL CITY Latitude : 38.2177 Longitude : -90.4014 ‹ previous : 636-207 next › : 636-208 Telephone Number List 636-208-0000 ~ 636-208-9999