Josia is a distinctive boys' name in United States, ranking #7385 in 2005 with 10 recorded births. The name reached its all-time peak in 2008 with 13 births ranking #6580. Since 1996, the popularity has increased by 66.7%. In 2005, approximately 1 in every 199,715 boys born was named Josia. FALLING Recent data shows the name is currently falling.