Area Code 314-209 located in MARYLAND HEIGHTS, SAINT LOUIS, MO, more detail is as below. Place NPA (Numbering Plan Area) : 314 NXX (Local Number Prefix) : 209 City : MARYLAND HEIGHTS County : SAINT LOUIS State : MO (Missouri) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 29189 LATA (Local Access Transport Area) : 520 Rate Center : LADUE ZIP Code Count : 175 ZIP Code Frequency : 27 ZIP Code : 63043 Other Information NPANXX : 314209 County Population : 0 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 : BRIDGETON Latitude : 38.7550 Longitude : -90.4325 ‹ previous : 314-208 next › : 314-209 Telephone Number List 314-209-0000 ~ 314-209-9999