Kodansha Kanji Dictionary (Jack Halpern, 2013):
1000
Morohashi Daikanwajiten (Volume 3, page 0276):
5608
New Japanese-English Character Dictionary (Jack Halpern, 1990):
810
The Modern Reader's Japanese-English Character Dictionary (Andrew Nelson):
1157
The New Nelson Japanese-English Character Dictionary (John Haig):
1116