Onya is a distinctive girls' name in United States, ranking #18454 in 2015 with 5 recorded births. This places Onya in the bottom 4% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 11 births ranking #10483. Since 1996, the popularity has decreased by 28.6%. In 2015, approximately 1 in every 356,931 girls born was named Onya. FALLING Recent data shows the name is currently falling.