There are 206 bones in an adult human body. A baby is born with over 270 bones but as a person grows older some of the bones fuse together until a fully grown human is left with 206.
Yes, in an adult human there are 206 bones. However, the human body has more bones at birth, about 300, many of which fuse together as we grow and develop.
An Adult's body has 206 bones, a newborn baby had 207. As you grow older, your bones compress and connect, which is why there is one less bone in the adult's body then in the newborn baby's.