About this number
(605) 945 is a landline based telephone number operated by Qwest Corporation and is located in zip code 57501 in the city of Pierre, South Dakota, which is in Hughes 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 945. It has an Operating Company Number (OCN) of 9631. A Common Language Location Identifier (CLLI) of PIRRSDCODS6. As well as a Local access and transport area (LATA) of 640. Zip code 57501 has a population of 16,309 as of the 2010 census.