Josia is a distinctive boys' name in United States, ranking #8547 in 2007 with 9 recorded births. The name reached its all-time peak in 2008 with 13 births ranking #6580. Since 1996, the popularity has increased by 50.0%. In 2007, approximately 1 in every 230,582 boys born was named Josia. FALLING Recent data shows the name is currently falling.