Area Code 319-531 located in IOWA CITY, JOHNSON, IA, more detail is as below. Place NPA (Numbering Plan Area) : 319 NXX (Local Number Prefix) : 531 City : IOWA CITY County : JOHNSON State : IA (Iowa) NXX Use Type : Wireless NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 19103 LATA (Local Access Transport Area) : 635 Rate Center : CEDAR RPDS ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 52240 Other Information NPANXX : 319531 County Population : 0 Switch CLLI (Common Language Location Identifier) : CDRRIA80CM2 MSA CBSA (Core Based Statistical Area) : Iowa City, IA MSA CBSA Code (Core Based Statistical Area) : 26980 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA OCN (Operating Company Number) : 6570 Coverage Area Name : CEDAR RAPIDS Latitude : 41.9815 Longitude : -91.6687 ‹ previous : 319-530 next › : 319-533 Telephone Number List 319-531-0000 ~ 319-531-9999