Milburn is a town in Johnston County, Oklahoma, United States, along the Blue River. The population was 317 at the 2010 census, an increase of 1.6 percent from 312 at the 2000 census. The town is notable as the location of the Chickasaw White House, the former home of Chickasaw Governor Douglas H. Johnston. This home is now a museum and is listed on the National Register of Historic Places.