Keaghan is a distinctive boys' name in United States, ranking #5568 in 2002 with 13 recorded births. This places Keaghan in the top 45% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 27 births ranking #3876. In 2002, approximately 1 in every 149,344 boys born was named Keaghan. FALLING Recent data shows the name is currently falling.