The surveyed Wikipedia treatment of the family gives only a 1909 ethnic-population count (2,070 Kwakiutl and 2,494 Nootka) rather than a current count of actual Wakashan speakers, and states no modern aggregate.
What would resolve this A published modern census or sociolinguistic survey reporting a current aggregate count of Wakashan-language speakers across all seven member languages.
OpenSociolinguistics and language documentation (Pacific Northwest Coast indigenous languages).Wikipedia: Wakashan Languages