Kodansha Kanji Dictionary (Jack Halpern, 2013):
2378
Morohashi Daikanwajiten (Volume 2, page 0309):
2193
New Japanese-English Character Dictionary (Jack Halpern, 1990):
1887
The Modern Reader's Japanese-English Character Dictionary (Andrew Nelson):
707
The New Nelson Japanese-English Character Dictionary (John Haig):
513