Ontario is a distinctive boys' name in United States, ranking #4592 in 2005 with 19 recorded births. The name reached its all-time peak in 1996 with 29 births ranking #2658. Since 1996, the popularity has decreased by 34.5%. In 2005, approximately 1 in every 105,113 boys born was named Ontario. FALLING Recent data shows the name is currently falling.