Jasiah is a distinctive girls' name in United States, ranking #9306 in 2022 with 11 recorded births. The name reached its all-time peak in 2008 with 46 births ranking #3545. Since 1996, the popularity has increased by 83.3%. In 2022, approximately 1 in every 148,978 girls born was named Jasiah. RISING Recent data shows the name is currently rising.
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.