Mackenna is a distinctive girls' name in United States, ranking #1894 in 1997 with 78 recorded births. The name reached its all-time peak in 2008 with 187 births ranking #1322. Since 1996, the popularity has decreased by 21.2%. In 1997, approximately 1 in every 22,316 girls born was named Mackenna. FALLING Recent data shows the name is currently falling.