About this number
(503) 628 is a landline based telephone number operated by Frontier Communications Northw and is located in zip code 97123 in the city of Hillsboro, Oregon, which is in Washington County, and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 503 and Network Numbering Exchange (NXX - also known as a prefix) of 628. It has an Operating Company Number (OCN) of 4323. A Common Language Location Identifier (CLLI) of SCHLORXXRS1. As well as a Local access and transport area (LATA) of 672. Zip code 97123 has a population of 44,537 as of the 2010 census.