Jasiah is a distinctive boys' name in England & Wales, ranking #2264 in 2024 with 10 recorded births. The name reached its all-time peak in 2022 with 12 births ranking #1880. In 2024, approximately 1 in every 27,779 boys born was named Jasiah. FALLING Recent data shows the name is currently falling.
Jasiah is a modern variant of Josiah. Through that line it carries the older Hebrew root usually explained in relation to Yahweh supporting or healing.
Although the spelling is modern, the source ties it directly to Josiah rather than treating it as an unrelated invention. That gives it a stronger traditional footing than many other recent -iah names.