Ontario is a distinctive boys' name in United States, ranking #4979 in 2003 with 16 recorded births. The name reached its all-time peak in 1996 with 29 births ranking #2658. Since 1996, the popularity has decreased by 44.8%. In 2003, approximately 1 in every 123,454 boys born was named Ontario. FALLING Recent data shows the name is currently falling.