Diamond is a moderately popular girls' name in United States, ranking #235 in 2003 with 1,400 recorded births. The name reached its all-time peak in 1999 with 2,160 births ranking #150. Since 1996, the popularity has decreased by 17.5%. In 2003, approximately 1 in every 1,305 girls born was named Diamond. FALLING Recent data shows the name is currently falling.