Area Code 314-221 located in SAINT LOUIS, SAINT LOUIS CITY, MO, more detail is as below. Place NPA (Numbering Plan Area) : 314 NXX (Local Number Prefix) : 221 City : SAINT LOUIS County : SAINT LOUIS CITY State : MO (Missouri) NXX Use Type : Wireless NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 29510 LATA (Local Access Transport Area) : 520 Rate Center : KIRKWOOD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 63155 Other Information NPANXX : 314221 County Population : 0 Switch CLLI (Common Language Location Identifier) : MRHGMOCJCM0 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 : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : SAINT LOUIS Latitude : 38.6262 Longitude : -90.1927 ‹ previous : 314-221 next › : 314-222 Telephone Number List 314-221-0000 ~ 314-221-9999