Willis is a distinctive boys' name in United States, ranking #1978 in 2015 with 74 recorded births. The name reached its all-time peak in 1996 with 113 births ranking #1078. Since 1996, the popularity has decreased by 34.5%. In 2015, approximately 1 in every 25,895 boys born was named Willis. FALLING Recent data shows the name is currently falling.