About this number
(605) 786 is a landline based telephone number operated by Qwest Corporation and is located in zip code 57718 in the city of Black Hawk, South Dakota, which is in Meade 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 786. It has an Operating Company Number (OCN) of 9631. A Common Language Location Identifier (CLLI) of BLHKSDCERS1. As well as a Local access and transport area (LATA) of 640. Zip code 57718 has a population of 6,307 as of the 2010 census.