Carnforth is an unincorporated community in Poweshiek County, in the U.S. state of Iowa.

[1] A post office was established as Manatt in 1884, and renamed Carnforth after two months.

[2] The Carnforth post office was discontinued in 1907.

[3] A railroad official selected the place name Carnforth from a book he was reading at the time.

This article about the geography of Poweshiek County, Iowa is a stub.