Described as additions, administrative areas, areas, chapters, county districts, communities, districts, or segments, are legal administrative subdivisions of federally recognized American Indian reservations and off-reservation trust lands or are statistical subdivisions of Oklahoma tribal statistical areas (OTSAs). These entities are internal units of self-government or administration that serve social, cultural, and/or economic purposes for American Indians.
Related help topics: Search using Geography Overview
Related information:http://www.census.gov/geo/www/2010census/gtc/gtc_aiannha.html