I am no expert by any means but I am pretty sure that is a 2 1/2 or 3 year old deer. I have been wrong many times. I just don't see the body size I would expect in a 4 or 5 year old deer. He is a nice buck and looks healthy.
Same here...2 1/2...though the nose does appear longer than I would expect...he just does not have the mass in the chest or the heavy belly of an older buck...