About this number
(920) 638 is a landline based telephone number operated by At&T Local and is located in zip code 53094 in the city of Watertown, Wisconsin, which is in Jefferson County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 920 and Network Numbering Exchange (NXX - also known as a prefix) of 638. It has an Operating Company Number (OCN) of 7421. A Common Language Location Identifier (CLLI) of WTJTWIAA1MD. As well as a Local access and transport area (LATA) of 356. Zip code 53094 has a population of 19,169 as of the 2010 census.