Kodansha Kanji Dictionary (Jack Halpern, 2013):
3604
Morohashi Daikanwajiten (Volume 3, page 0881):
7033
New Japanese-English Character Dictionary (Jack Halpern, 1990):
2898
The Modern Reader's Japanese-English Character Dictionary (Andrew Nelson):
1275
The New Nelson Japanese-English Character Dictionary (John Haig):
1302