Area Code 636-207 located in CHESTERFIELD, SAINT LOUIS, MO, more detail is as below. Place NPA (Numbering Plan Area) : 636 NXX (Local Number Prefix) : 207 City : CHESTERFIELD 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 : 29 ZIP Code Frequency : 2 ZIP Code : 63005 Other Information NPANXX : 636207 Switch CLLI (Common Language Location Identifier) : MNCHMO59DS0 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 : SOUTHWESTERN BELL OCN (Operating Company Number) : 9533 Coverage Area Name : MANCHESTER Latitude : 38.5909 Longitude : -90.5411 ‹ previous : 636-207 next › : 636-207 Telephone Number List 636-207-0000 ~ 636-207-9999