Kiefer is a distinctive boys' name in United States, ranking #1861 in 1998 with 53 recorded births. The name reached its all-time peak in 2006 with 84 births ranking #1693. Since 1996, the popularity has decreased by 22.1%. In 1998, approximately 1 in every 36,063 boys born was named Kiefer. STABLE Recent data shows the name is currently stable.