Sandia Pueblo (/sænˈdiːə/; Tiwa: Tuf Shur Tia) is a federally recognized tribe of Native American Pueblo people inhabiting a 101-square-kilometre (40 sq mi) reservation of the same name in the eastern Rio Grande Rift of central New Mexico. It is one of 19 of New Mexico's Native American pueblos, considered one of the state's Eastern Pueblos. The population was 427 as of the 2010 census.[1] The people are traditionally Tiwa speakers, a language of the Tanoan group, although retention of the traditional language has waned with later generations. They have a tribal government that operates Sandia Casino, Bien Mur Indian Market Center, and Sandia Lakes Recreation Area, as well as representing the will of the Pueblo in business and political matters.