351 Area Code
Northeastern Massachusetts (overlay), Massachusetts
Area code 351 is located in Northeastern Massachusetts (overlay), Massachusetts. It covers Lowell, Lawrence, and surrounding areas in the Eastern time zone (UTC-5). Administered by NANPA.
Where is area code 351?
Area code 351 is located in Northeastern Massachusetts (overlay), Massachusetts. It covers Lowell, Lawrence, and surrounding areas in the Eastern time zone (UTC-5).
Cities Covered by Area Code 351
Area code 351 primarily serves the Northeastern Massachusetts (overlay) area of Massachusetts. The exact coverage includes Lowell, Lawrence, and Haverhill, along with surrounding communities and suburbs.
Time Zone
Eastern Time — UTC-5
Area code 351 operates in the Eastern Time Zone. When calling 351 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 351
Area code 351 was introduced in 2001 as a geographic area code serving Northeastern Massachusetts (overlay), Massachusetts. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.