About this number
(231) 745 is a landline based telephone number operated by Ameritech Michigan and is located in zip code 49304 in the city of Baldwin, Michigan, which is in Lake County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 231 and Network Numbering Exchange (NXX - also known as a prefix) of 745. It has an Operating Company Number (OCN) of 9323. A Common Language Location Identifier (CLLI) of BLDWMIMNRSA. As well as a Local access and transport area (LATA) of 348. Zip code 49304 has a population of 4,328 as of the 2010 census.