The non-canon roleplaying sourcebooks (see below) gave solid population numbers for most races, and put the total high elf population at around 24,810. 1.35% of the original high elf population), and since Kael'thas' army numbered at least 2,000 ('thousands of them') according to the 'Excerpts from the Journal of Archmage Vargoth', it follows that the total high elf population is currently at least 1,481 (and at least ~148,000 prior to the Third War). Since Kael'thas took 15% of the blood elves to Outland (i.e.
The number of High elves remaining is not precisely known, however it is stated that the surviving high elves comprise a mere 1% of the original high elven population, with the blood elves accounting for the remaining 9% of it.
3.3 New world patterns and the Thalassian Kingdom.