About this number
(815) 657 is a landline based telephone number operated by Ameritech Illinois and is located in zip code 61741 in the city of Forrest, Illinois, which is in Livingston County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 815 and Network Numbering Exchange (NXX - also known as a prefix) of 657. It has an Operating Company Number (OCN) of 9329. A Common Language Location Identifier (CLLI) of FRSTILFODS0. As well as a Local access and transport area (LATA) of 366. Zip code 61741 has a population of 1,746 as of the 2010 census.