Kodansha Kanji Dictionary (Jack Halpern, 2013):
1606
Morohashi Daikanwajiten (Volume 8, page 0409):
24564
New Japanese-English Character Dictionary (Jack Halpern, 1990):
1256
The Modern Reader's Japanese-English Character Dictionary (Andrew Nelson):
3225
The New Nelson Japanese-English Character Dictionary (John Haig):
4057