Area Code 314-205 located in MARYLAND HEIGHTS, SAINT LOUIS, MO, more detail is as below. Place NPA (Numbering Plan Area) : 314 NXX (Local Number Prefix) : 205 City : MARYLAND HEIGHTS County : SAINT LOUIS State : MO (Missouri) NXX Use Type : Landline NXX Intro Version : 1995-02-11 FIPS (Federal Information Processing Standards) : 29189 LATA (Local Access Transport Area) : 520 Rate Center : CREVECOEUR ZIP Code Count : 234 ZIP Code Frequency : 21 ZIP Code : 63043 Other Information NPANXX : 314205 County Population : 0 Switch CLLI (Common Language Location Identifier) : STLSMO27DS0 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 : CREVE COEUR Latitude : 38.6823 Longitude : -90.4844 ‹ previous : 314-205 next › : 314-205 Telephone Number List 314-205-0000 ~ 314-205-9999