Josiah is a highly popular boys' name in United States, ranking #49 in 2021 with 6,146 recorded births. The name reached its all-time peak in 2017 with 7,073 births ranking #51. Since 1996, the popularity has increased by 394.8%. In 2021, approximately 1 in every 284 boys born was named Josiah. STABLE Recent data shows the name is currently stable.