About this number
(605) 254 is a landline based telephone number operated by At&T Local and is located in zip code 57104 in the city of Sioux Falls, South Dakota, which is in Minnehaha 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 254. It has an Operating Company Number (OCN) of 7421. A Common Language Location Identifier (CLLI) of SXFLSD10A03. As well as a Local access and transport area (LATA) of 640. Zip code 57104 has a population of 25,901 as of the 2010 census.