Mackinley is a distinctive boys' name in United States, ranking #7986 in 2019 with 10 recorded births. The name reached its all-time peak in 1999 with 23 births ranking #3447. Since 1996, the popularity has decreased by 37.5%. In 2019, approximately 1 in every 179,336 boys born was named Mackinley. RISING Recent data shows the name is currently rising.