Mackensie is a distinctive girls' name in United States, ranking #7390 in 2010 with 17 recorded births. The name reached its all-time peak in 1998 with 63 births ranking #2269. Since 1996, the popularity has decreased by 64.6%. In 2010, approximately 1 in every 104,549 girls born was named Mackensie. FALLING Recent data shows the name is currently falling.