Kieffer is a distinctive boys' name in United States, ranking #10857 in 1999 with 5 recorded births. The name reached its all-time peak in 1996 with 16 births ranking #4111. Since 1996, the popularity has decreased by 68.8%. In 1999, approximately 1 in every 384,017 boys born was named Kieffer. FALLING Recent data shows the name is currently falling.