SH 25 was one of the original 25 Texas highway routes proposed on June 21, 1917.

On August 21, 1923, all of SH 25 south of Mineral Wells was cancelled.

On February 18, 1924, the section from Jacksboro to Henrietta was cancelled, and SH 25 had been rerouted to Archer City.

On June 24, 1931, the route south of Windthorst became a portion of SH 66, changing it to its current route, with a toll bridge crossing across the Red River into Oklahoma.

SH 25A was a branch designated on April 27, 1925 from Antelope via Henrietta to Oklahoma.