About this number
(309) 535 is a landline based telephone number operated by Gallatin River Communications and is located in zip code 61567 in the city of Topeka, Illinois, which is in Mason 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 535. It has an Operating Company Number (OCN) of 1057. A Common Language Location Identifier (CLLI) of TPKAILXDRS0. As well as a Local access and transport area (LATA) of 368. Zip code 61567 has a population of 624 as of the 2010 census.