Miami is a city in and county seat of Ottawa County, Oklahoma, United States, founded in 1891. Lead and zinc mining established by 1918, caused it to boom. It is the capital of the Miami Tribe of Oklahoma, after which it is named, the Modoc Tribe of Oklahoma, Ottawa Tribe of Oklahoma, Peoria Tribe of Indians and Shawnee Tribe. As of the 2010 census, it had 13,570 inhabitants a one percent decline since 2000.