Ontario is a distinctive boys' name in United States, ranking #9431 in 2018 with 8 recorded births. The name reached its all-time peak in 1996 with 29 births ranking #2658. Since 1996, the popularity has decreased by 72.4%. In 2018, approximately 1 in every 226,934 boys born was named Ontario. FALLING Recent data shows the name is currently falling.