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An adult human skeleton consists of 206 bones

Infants are born with around 270 bones which fuse together over childhood

At birth, the human skeleton contains roughly 270 soft cartilage elements and smaller bones. As a child grows, many of these bones fuse together in a process called ossification. By adulthood, the average human skeleton settles at 206 distinct bones, though minor individual variations exist.

Human lower jawbone (mandibular bone) of an adult female, aged 20-30 years. From the Neolithic site of Bestansur, Iraq. 7800-7500 BCE. Sulaymaniyah Museum, Iraq
Osama Shukir Muhammed Amin FRCP(Glasg) ยท CC BY-SA 4.0 ยท licence ยท source

Where this comes from

MedlinePlus

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Tags: bones, skeleton, growth

An adult human skeleton consists of 206 bones: the short answers

Where does this come from, and can I check it?
Infants are born with around 270 bones which fuse together over childhood. The figure is taken from MedlinePlus, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?
Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?
The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.