Area Code 410-209 located in COLUMBIA, HOWARD, MD, more detail is as below. Place NPA (Numbering Plan Area) : 410 NXX (Local Number Prefix) : 209 City : COLUMBIA County : HOWARD State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1996-07-01 FIPS (Federal Information Processing Standards) : 24027 LATA (Local Access Transport Area) : 238 Rate Center : BALTIMORE ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 21046 Other Information NPANXX : 410209 Switch CLLI (Common Language Location Identifier) : BLTMMDCHDS2 MSA CBSA (Core Based Statistical Area) : Baltimore-Towson, MD MSA CBSA Code (Core Based Statistical Area) : 12580 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : VERIZON MARYLAND, INC. OCN (Operating Company Number) : 9212 Coverage Area Name : BALTIMORE Latitude : 39.2938 Longitude : -76.6132 ‹ previous : 410-208 next › : 410-209 Telephone Number List 410-209-0000 ~ 410-209-9999