Malachy is a distinctive boys' name in United States, ranking #4317 in 2006 with 22 recorded births. This places Malachy in the top 31% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 35 births ranking #2732. In 2006, approximately 1 in every 93,415 boys born was named Malachy. FALLING Recent data shows the name is currently falling.