Is Harry Potter poor

Answer 1

In regards to monetary terms...

Though while staying at the Dursley's, it appears as if he's poor, he actually has a small fortune from his parents stowed away in Gringotts, as well learned in the Philosopher's (Sorcerer's) Stone.

In essence, in the wizarding world, Harry is not poor by any means, and some may say he is rich, but in the muggle world, Harry is quite poor as the Dursleys refuse to give him good-quality clothing or gifts.

In regards to other...

While talking about other ways of being poor, Harry is rich in friendship and close relations. The Weasleys are family to him (quite literally, actually) and his other assorted acquaintances from the Order of the Phoenix. His friends always stick up for him and are willing to do anything for him, really.