Kiefer is a distinctive boys' name in United States, ranking #8570 in 2019 with 9 recorded births. This places Kiefer in the bottom 39% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 84 births ranking #1693. Since 1996, the popularity has decreased by 86.8%. In 2019, approximately 1 in every 199,262 boys born was named Kiefer. STABLE Recent data shows the name is currently stable.