Willis is a distinctive boys' name in United States, ranking #1768 in 2006 with 79 recorded births. The name reached its all-time peak in 1996 with 113 births ranking #1078. Since 1996, the popularity has decreased by 30.1%. In 2006, approximately 1 in every 26,014 boys born was named Willis. FALLING Recent data shows the name is currently falling.