In Italy I think not.
I knew in person only one who read those books, my cousin - he introduced me to Animorphs - but he left the series with #6.
Later I met a group of 10-15 fans on a mailing list, but I lost contacts in 2002.
I have never known another reader, and my town isn't so small - more than 50,000 inhabitants, with hundreds or some thousands of schoolboys - all potential readers.
As far as I know, we could be the only readers in the whole country!
Moreover, the TV series was a flop.
Once I learned from a spokesman from the publishing house that the series had sold around 400,000 copies; this means that, assuming that not all people have actually bought all 52 books published, there may have been from 10,000 to 20,000 readers, I believe.