About this number
(641) 857 is a landline based telephone number operated by Dumont Telephone Co. and is located in zip code 50625 in the city of Dumont, Iowa, which is in Butler County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 641 and Network Numbering Exchange (NXX - also known as a prefix) of 857. It has an Operating Company Number (OCN) of 1152. A Common Language Location Identifier (CLLI) of DUMTIAXODS0. As well as a Local access and transport area (LATA) of 632. Zip code 50625 has a population of 1,004 as of the 2010 census.