An adult human spine typically has 24 movable vertebrae and 33 vertebrae in total if you include the fused bones of the sacrum and coccyx.

Quick Scoop

  • At birth: About 33 separate vertebrae in the spinal column.
  • In most adults:
    • 7 cervical (neck) vertebrae
    • 12 thoracic (mid‑back) vertebrae
    • 5 lumbar (lower‑back) vertebrae
      → These 24 are the movable vertebrae.
  • Fused bones: 5 sacral vertebrae fuse into the sacrum, and about 4 coccygeal vertebrae fuse into the coccyx (tailbone), bringing the total count to about 33.

So if someone asks “how many vertebrae in the human spine,” the precise answer is:

  • 24 when talking only about the distinct, movable vertebrae.
  • Around 33 when counting every vertebra, including the fused ones at the base of the spine.