Harley is a moderately popular girls' name in United States, ranking #306 in 2021 with 1,045 recorded births. The name reached its all-time peak in 2017 with 1,531 births ranking #202. Since 1996, the popularity has increased by 43.2%. In 2021, approximately 1 in every 1,569 girls born was named Harley. FALLING Recent data shows the name is currently falling.