Willis is a distinctive boys' name in United States, ranking #1941 in 2005 with 66 recorded births. The name reached its all-time peak in 1996 with 113 births ranking #1078. Since 1996, the popularity has decreased by 41.6%. In 2005, approximately 1 in every 30,260 boys born was named Willis. FALLING Recent data shows the name is currently falling.