Kiefer is a distinctive boys' name in United States, ranking #1823 in 2004 with 68 recorded births. This places Kiefer in the top 14% 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. In 2004, approximately 1 in every 29,188 boys born was named Kiefer. STABLE Recent data shows the name is currently stable.