It is operated by the Confederated Tribes of the Grand Ronde Community of Oregon, and was created to 'enhance economic self-sufficiency opportunities for the Confederated Tribes of Grand Ronde, its members and surrounding communities to promote economic diversification by the Tribes: to support a variety of housing, educational and cultural programs under the direction of Tribal Council'. Spirit Mountain Casino is a Native American casino located in Grand Ronde, Oregon, United States on Oregon Route 18. Native American casino in Oregon Spirit Mountain Casino