Valdemar is a distinctive boys' name in United States, ranking #6586 in 2007 with 13 recorded births. This places Valdemar in the top 46% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 24 births ranking #3664. In 2007, approximately 1 in every 159,633 boys born was named Valdemar. STABLE Recent data shows the name is currently stable.