Kiefer is a distinctive boys' name in United States, ranking #3574 in 2001 with 24 recorded births. The name reached its all-time peak in 2006 with 84 births ranking #1693. Since 1996, the popularity has decreased by 64.7%. In 2001, approximately 1 in every 80,951 boys born was named Kiefer. STABLE Recent data shows the name is currently stable.