Ridgeport is an unincorporated community in Boone County, in the U.S. state of Iowa.

[1] An old variant name was "Mineral Ridge".

[1] Ridgeport was originally called "Mineral Ridge", and under the latter name was platted in 1854, taking its name from the ridge upon which the town site is situated.

[2] A post office called Mineral Ridge was established in 1854, and remained in operation until 1913.

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