Pittsburg is a town in Pittsburg County, Oklahoma, United States. As of the 2020 census, the community had 180 residents. The first settlement of present day Pittsburg by non-indigenous peoples was in 1899 when Daniel Edwards, accompanied by son Thomas, placed a coal shaft two miles east of Kiowa, in Choctaw Nation. In 1903, the United States Postal Servi…Pittsburg is a town in Pittsburg County, Oklahoma, United States. As of the 2020 census, the community had 180 residents. The first settlement of present day Pittsburg by non-indigenous peoples was in 1899 when Daniel Edwards, accompanied by son Thomas, placed a coal shaft two miles east of Kiowa, in Choctaw Nation. In 1903, the United States Postal Service established a post office in Cowpers and appointed Daniel Edwards as postmaster. Its name was changed to Edwards, Indian Territory, on September 3, 1903, and to Pittsburg, Oklahoma, on August 27, 1909. During its time as Edwards, it was named for J.R. Edwards, a coal operator. Its newest name, Pittsburg, commemorates the county which was created at Oklahoma's statehood in 1907.