About this number
(331) 251 is a wireless/mobile based telephone number operated by Cellco Partnership DBA Verizon and is located in zip code 60601 in the city of Chicago, Illinois, which is in Cook County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 331 and Network Numbering Exchange (NXX - also known as a prefix) of 251. It has an Operating Company Number (OCN) of 6333. A Common Language Location Identifier (CLLI) of CHCGILTCDS4. As well as a Local access and transport area (LATA) of 358. It was first assigned for usage on 12/05/2012. Zip code 60601 has a population of 11,110 as of the 2010 census.