Mackenna is a distinctive girls' name in United States, ranking #1322 in 2008 with 187 recorded births. The name reached its all-time peak in 2008 with 187 births ranking #1322. Since 1996, the popularity has increased by 88.9%. In 2008, approximately 1 in every 10,111 girls born was named Mackenna. FALLING Recent data shows the name is currently falling.