Essential Kanji (P.G. O'Neill):
539
Kodansha Kanji Dictionary (Jack Halpern, 2013):
1244
Morohashi Daikanwajiten (Volume 6, page 0389):
14919
New Japanese-English Character Dictionary (Jack Halpern, 1990):
988
Remembering The Kanji (James Heisig):
2512
Remembering The Kanji (James Heisig, 6 edition):
2572
The Modern Reader's Japanese-English Character Dictionary (Andrew Nelson):
2295
The New Nelson Japanese-English Character Dictionary (John Haig):
2741