About this number
(309) 788 is a landline based telephone number operated by Ameritech Illinois and is located in zip code 61201 in the city of Rock Island, Illinois, which is in Rock Island County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 309 and Network Numbering Exchange (NXX - also known as a prefix) of 788. It has an Operating Company Number (OCN) of 9329. A Common Language Location Identifier (CLLI) of RCISILRIDS1. As well as a Local access and transport area (LATA) of 634. Zip code 61201 has a population of 39,116 as of the 2010 census.