Mckailey is a distinctive girls' name in United States, ranking #12665 in 2000 with 7 recorded births. The name reached its all-time peak in 2000 with 7 births ranking #12665. Since 1996, the popularity has increased by 40.0%. In 2000, approximately 1 in every 259,425 girls born was named Mckailey. FALLING Recent data shows the name is currently falling.