Josia is a distinctive boys' name in United States, ranking #9410 in 2009 with 8 recorded births. The name reached its all-time peak in 2008 with 13 births ranking #6580. Since 1996, the popularity has increased by 33.3%. In 2009, approximately 1 in every 247,913 boys born was named Josia. FALLING Recent data shows the name is currently falling.