410 Area Code
Baltimore, Maryland
Area code 410 is located in Baltimore, Maryland. It covers Baltimore, Annapolis, and surrounding areas in the Eastern time zone (UTC-5). Administered by NANPA.
Where is area code 410?
Area code 410 is located in Baltimore, Maryland. It covers Baltimore, Annapolis, and surrounding areas in the Eastern time zone (UTC-5).
Area code 410 is overlaid by area code 443. Both codes serve the same geographic region and require 10-digit dialing for local calls.
Cities Covered by Area Code 410
Area code 410 primarily serves the Baltimore area of Maryland. The exact coverage includes Baltimore, Annapolis, and Towson, along with surrounding communities and suburbs.
Time Zone
Eastern Time — UTC-5
Area code 410 operates in the Eastern Time Zone. When calling 410 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 410
Area code 410 was introduced in 1991 as a geographic area code serving Baltimore, Maryland. As demand for phone numbers grew, overlay code 443 was added to the same region, requiring 10-digit dialing for local calls. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.