About this number
(740) 547 is a landline based telephone number operated by Ameritech Ohio and is located in zip code 45638 in the city of Ironton, Ohio, which is in Lawrence County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 740 and Network Numbering Exchange (NXX - also known as a prefix) of 547. It has an Operating Company Number (OCN) of 9321. A Common Language Location Identifier (CLLI) of IRTNOH5353C. As well as a Local access and transport area (LATA) of 324. Zip code 45638 has a population of 21,635 as of the 2010 census.