Mackinley is a distinctive girls' name in United States, ranking #13072 in 1997 with 6 recorded births. The name reached its all-time peak in 2018 with 28 births ranking #4843. Since 1996, the popularity has decreased by 14.3%. In 1997, approximately 1 in every 290,110 girls born was named Mackinley. FALLING Recent data shows the name is currently falling.