The highway was originally designated on August 21, 1923 along the easternmost branch of previously numbered SH 7 from Zavalla southeast to Bon Wier. On September 26, 1939, the section from Jasper to Bon Wier was transferred to U.S. Highway 190, while SH 63 was rerouted northeast to the Louisiana state lineviaBurkeville, replacing part of SH 45. This is its current routing.
Future
As part of the I-14 System in Texas project, SH 63 between Jasper and the Louisiana state line is proposed to be upgraded to interstate standards and become I-14.