Tanacross is the ancestral language of the Mansfield-Ketchumstock and Healy Lake-Joseph Village bands. It is spoken today at Healy Lake, Dot Lake, and Tanacross on the middle Tanana River. The total population is about 220, of whom about 65 speak the language.
The name Tanacross derives from the English name Tanana Crossing, a ford on the Eagle Trail. The indigenous name for the language is Nee'anděg'.
A practical alphabet was established in 1973 and a few booklets have been published at the Alaska Native Language Center. In 2009 the Tanacross Learners' Dictionary, compiled by Irene Arnold, Rick Thoman, and Gary Holton, was published.