About this number
(978) 521 is a landline based telephone number operated by Verizon New England Inc. and is located in zip code 01830 in the city of Haverhill, Massachusetts, which is in Essex County, and is in the Northeast. It has a Number Planning Area (NPA - also known as an Area Code) of 978 and Network Numbering Exchange (NXX - also known as a prefix) of 521. It has an Operating Company Number (OCN) of 9102. A Common Language Location Identifier (CLLI) of HVHLMAWIDS1. As well as a Local access and transport area (LATA) of 128. Zip code 01830 has a population of 25,137 as of the 2010 census.