The headquarters of the Ottawa Tribe of Oklahoma is Miami. Their tribal jurisdictional area is in Ottawa County. In the early 21st century, there are 2,500 enrolled tribal members; 737 live within the state of Oklahoma. The tribe bases membership qualifications on direct lineal descent; that is, they have no minimum blood quantum requirement.
The tribe operates a Community Health Program and the Healthy Living Center in Miami, as well as a Department of Environmental Protection. The tribe publishes the Adawe News for its tribal members. It offers Ottawa language classes. The Ottawa Tribe of Oklahoma's annual powwow is held every Labor Day weekend.