Generally included with the Shasta tribe proper, are a number of adjacent smaller tribes who spoke a related Shastan language. These related tribes include the Konomihu, New River Shasta and the Okwanuchu tribes.
Estimates for the pre-contact populations of most native groups in California have varied substantially. (See Population of Native California.)Alfred L. Kroeber (1925:883) put the 1770 population of the Shasta proper as 2,000 and the New River, Konomihu, and Okwanuchu groups, along with the Chimariko, as 1,000. In the 1940s, Sherburne F. Cook arrived at a similar estimate of about 3,300, but he subsequently raised the figure to 5,900 (Cook 1976a:177, 1976b:6).
Kroeber estimated the population of the Shasta proper in 1910 as 100.