Where is the auditory nerve located?
Inside the skull. It is a "cranial nerve" (thus not from the spinal cord) and goes directly from the brain to the inner ear.
The 8th Cranial nerve has a lot of common names, but it always begins in the inner ear and ends in the brain. Here are names for the same nerve from different texts: Acoustic nerve Auditory nerve Cochlear nerve Auditory vestibular nerve Vestibulocochlear nerve is the preferred name 8th Cranial Nerve