Mackensie is a distinctive girls' name in United States, ranking #9989 in 2013 with 11 recorded births. The name reached its all-time peak in 1998 with 63 births ranking #2269. Since 1996, the popularity has decreased by 77.1%. In 2013, approximately 1 in every 159,492 girls born was named Mackensie. FALLING Recent data shows the name is currently falling.