About this number
(815) 622-0021 is a landline based telephone number operated by Ameritech Illinois and is located in zip code 61081 in the city of Sterling, Illinois, which is in Whiteside County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 815, a Network Numbering Exchange (NXX - also known as a prefix) of 622 and a subscriber number of 0021. It has an Operating Company Number (OCN) of 9329. A Common Language Location Identifier (CLLI) of STNGILSIDS0. As well as a Local access and transport area (LATA) of 364. It was first assigned for usage on 01/01/1901. Zip code 61081 has a population of 21,934 as of the 2010 census.