Area Code 636-200 located in SAINT LOUIS, SAINT LOUIS, MO, more detail is as below. Place NPA (Numbering Plan Area) : 636 NXX (Local Number Prefix) : 200 City : SAINT LOUIS County : SAINT LOUIS State : MO (Missouri) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 29189 LATA (Local Access Transport Area) : 520 Rate Center : MANCHESTER ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 63146 Other Information NPANXX : 636200 Switch CLLI (Common Language Location Identifier) : MRHGMO02DS0 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 : BIRCH TELECOM OF MISSOURI, INC. OCN (Operating Company Number) : 8665 Coverage Area Name : MARYLAND HEIGHTS Latitude : 38.7136 Longitude : -90.4453 ‹ previous : 636-200 next › : 636-203 Telephone Number List 636-200-0000 ~ 636-200-9999