Mackenna is a distinctive girls' name in United States, ranking #1449 in 2003 with 136 recorded births. The name reached its all-time peak in 2008 with 187 births ranking #1322. Since 1996, the popularity has increased by 37.4%. In 2003, approximately 1 in every 13,434 girls born was named Mackenna. FALLING Recent data shows the name is currently falling.