can I put above after a noun
For a copy of their brochure, write to the above address.
can I put above after address, the address above , if it can , which one will above be as , adv or adj ?
I think there may be some grammar mistakes in my question above , can you point them out, thanks in advance .

Question

Answer

The above address - above is an adjective.
The address above - above is an adverb.
Both are correct.

Answer

Both are correct, and "above" is functioning as an adjective in both cases.