Mckinley is a moderately popular girls' name in United States, ranking #447 in 2018 with 718 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 697.8%. In 2018, approximately 1 in every 2,368 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.