Mackinley is a distinctive girls' name in United States, ranking #7013 in 2011 with 18 recorded births. The name reached its all-time peak in 2018 with 28 births ranking #4843. Since 1996, the popularity has increased by 157.1%. In 2011, approximately 1 in every 97,711 girls born was named Mackinley. FALLING Recent data shows the name is currently falling.