Mackinley is a distinctive boys' name in United States, ranking #13505 in 2017 with 5 recorded births. The name reached its all-time peak in 1999 with 23 births ranking #3447. Since 1996, the popularity has decreased by 68.8%. In 2017, approximately 1 in every 370,063 boys born was named Mackinley. RISING Recent data shows the name is currently rising.