Cowan is a distinctive boys' name in United States, ranking #6168 in 2006 with 13 recorded births. The name reached its all-time peak in 2005 with 15 births ranking #5333. Since 1996, the popularity has increased by 160.0%. In 2006, approximately 1 in every 158,086 boys born was named Cowan. FALLING Recent data shows the name is currently falling.