[7] Several sources confirm that the town settled by German immigrants received its name because its first post office was located in (or near) a corn field.

[11][12] These Mennonite homesteaders brought with them a particular variety of winter wheat known as "Turkey Red", which grew particularly well in the western Oklahoma soil.

[11] To mark its centennial year, Corn received a historical marker from the state honoring both its agricultural and Mennonite heritage.

[12] On April 27, 1896, the Korn post office was established in a rural home, two and one-fourth miles north of the present-day town.

Shortly thereafter, the post office was moved three miles north of the original site to a store owned by James Kendall.

When Kendall's planned townsite failed to develop at the location, the post office was once again moved in 1903 to the present day site of the town of Corn, finding its new home in the merchandise store of George B.

[10] World War I brought down harassment both from vigilantes and the Washita County Council of Defense upon many of the Germans and Mennonites that lived in and around Corn.

This was due to the combination of their German heritage and their particular Mennonite/Anabaptist theological convictions, which dictated their conscientious objection to participation in warfare.

[15] Not only did the town Americanize its name from Korn to Corn during this time, but the nearby Cordell Christian College closed and a German-language newspaper, the Oklahoma Vorwärts, ceased operation after threats from the Knights of Liberty.

[15][16] A private Christian academy, under the name Washita Gemeinde Schule, was established by the Mennonite Brethren Church as a Bible and language school in 1902.

[17] Now known as Corn Bible Academy, it has continuously educated students into the 21st century[10] and is the oldest Christian school west of the Mississippi.