Delmar is a distinctive boys' name in United States, ranking #3116 in 1998 with 25 recorded births. This places Delmar in the top 28% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 31 births ranking #3430. In 1998, approximately 1 in every 76,453 boys born was named Delmar. FALLING Recent data shows the name is currently falling.