Jax is a distinctive girls' name in United States, ranking #8071 in 2025 with 13 recorded births. The name reached its all-time peak in 2015 with 38 births ranking #3946. In 2025, approximately 1 in every 123,636 girls born was named Jax. STABLE Recent data shows the name is currently stable.
Jax is a brisk modern short form of Jackson. In practical terms it carries the inherited Jackson sense, usually understood as "son of Jack".
Behind the Name treats Jax as a modern English short form that only began appearing as a given name in the United States in the 1990s. Its rise was helped by pop culture as well as the popularity of clipped, punchy names.