Kodansha Kanji Dictionary (Jack Halpern, 2013):
1658
Morohashi Daikanwajiten (Volume 9, page 0002):
28122
New Japanese-English Character Dictionary (Jack Halpern, 1990):
1307
The Modern Reader's Japanese-English Character Dictionary (Andrew Nelson):
3630
The New Nelson Japanese-English Character Dictionary (John Haig):
4626