Jax is a moderately popular boys' name in United States, ranking #342 in 2025 with 961 recorded births. The name reached its all-time peak in 2015 with 1,864 births ranking #215. Since 1996, the popularity has increased by 4,268.2%. In 2025, approximately 1 in every 1,777 boys born was named Jax. FALLING Recent data shows the name is currently falling.