About this number
(605) 866-0031 is a landline based telephone number operated by West River Cooperative Telepho and is located in zip code 57620 in the city of Bison, South Dakota, which is in Perkins County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 605, a Network Numbering Exchange (NXX - also known as a prefix) of 866 and a subscriber number of 0031. It has an Operating Company Number (OCN) of 1689. A Common Language Location Identifier (CLLI) of BISNSDXADS0. As well as a Local access and transport area (LATA) of 640. Zip code 57620 has a population of 515 as of the 2010 census.