Orson is an unincorporated community in Harrison County, in the U.S. state of Iowa.

[1] Orson was laid out in 1899 when the railroad was extended to that point.

[2] The community was named for Orson Pratt Edmonds.

A post office was established at Orson in 1900, and remained in operation until it was discontinued in 1957.

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