Eagletown is an unincorporated community and census-designated place in McCurtain County, Oklahoma, United States. The population was 528 at the 2010 census. Located on Mountain Fork River, approximately 6 miles from the Oklahoma-Arkansas border, it was the first permanent Choctaw settlement in the Indian Territory, who called it o̱ssi tamaha. Eagletown was an important town from 1834 to 1906, and after 1850, served as county seat for the Choctaw Nation's Eagle County.