175? 155? A bag of chips?
It's varied movie to movie.
Rocky 1 and 2, he was 190-202 pounds. Rocky 3 he was down to a shredded 155-161 pounds. Rocky 4 he was 175 pounds. Copland he was 212 pounds of fat (up from 172 of lean muscle). Rocky Balboa he was at his heaviest at 219 pounds (but was missing his pecs). Also carried a lot of weight and size for the last Rambo movie he made, which came just after Rocky Balboa (as large as he was in Rocky Balboa, but more cut and shredded).
His actual height was never over 5'8"-5'8.5", even though he claimed 5'10". Lift wearer. At almost 70 years old now, he's even shorter (5'7" and change).