COUNTY ORGANIZED: 1907 from Recording District 22 in the Chicasaw Nation.

COUNTY NAMED FOR:  Douglas H. Johnston, Governor of the Chickasaw Nation.

COUNTY SEAT NAMED FOR: Chief Tishomingo.

COURTHOUSES:  The first County Courthouse was a two-story frame building that burned in 1908.  In 1909, the county purchased the Chickasaw Nation Capitol building, which was used as the County Courthouse until a new structure was built in 1992.  The Chickasaw Capitol was sold back to the Chickasaw Nation at that time. 

STANDING: 

• The 1910 Courthouse was originally completed in 1898 as the Chickasaw Nation Capitol, and it served in that capacity until Statehood in 1907. 
• 1992 Modern Courthouse