Cletus is a distinctive boys' name in United States, ranking #9876 in 1998 with 5 recorded births. The name reached its all-time peak in 1999 with 12 births ranking #5366. Since 1996, the popularity has decreased by 50.0%. In 1998, approximately 1 in every 382,264 boys born was named Cletus. STABLE Recent data shows the name is currently stable.