About this number
(815) 257 is a wireless/mobile based telephone number operated by Illinois Valley Cellular Rsa 2 and is located in zip code 61364 in the city of Streator, Illinois, which is in La Salle 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 257. It has an Operating Company Number (OCN) of 5272. A Common Language Location Identifier (CLLI) of STRTILXADS0. As well as a Local access and transport area (LATA) of 366. Zip code 61364 has a population of 20,133 as of the 2010 census.