About this number
(605) 793 is a landline based telephone number operated by Interstate Telecom. Coop., INC and is located in zip code 57223 in the city of Castlewood, South Dakota, which is in Hamlin County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 605 and Network Numbering Exchange (NXX - also known as a prefix) of 793. It has an Operating Company Number (OCN) of 1651. A Common Language Location Identifier (CLLI) of CSWDSDXARS1. As well as a Local access and transport area (LATA) of 640. Zip code 57223 has a population of 1,356 as of the 2010 census.