It is a centre for traditional crafts, goat herding and equestrian sports, and hosts a large regional horse festival every year. Arvaikheer has a population of 19,058 (2000 census), 23,298 (2004 est.), 24,954 (2006 est.), 25,622 (2008 est.). Arvaikheer is by far the biggest town in the aimag.