I was vague and said around 500, because there's been several timeskips since when they were founded with 500 and so presumably they would have had more people (though recently the Dyun Champion and your victors cut their numbers back).

I've said repeatedly that not all of them really do much fighting, though. There's probably about 250 hunters left since there were 300 before the battle. The rest are decent warriors too but Ialu never really sends them out with his armies.