Mackinley is a distinctive boys' name in United States, ranking #5762 in 2003 with 13 recorded births. The name reached its all-time peak in 1999 with 23 births ranking #3447. Since 1996, the popularity has decreased by 18.8%. In 2003, approximately 1 in every 151,944 boys born was named Mackinley. RISING Recent data shows the name is currently rising.