Diamond is a moderately popular girls' name in United States, ranking #164 in 1998 with 1,919 recorded births. The name reached its all-time peak in 1999 with 2,160 births ranking #150. Since 1996, the popularity has increased by 13.1%. In 1998, approximately 1 in every 921 girls born was named Diamond. FALLING Recent data shows the name is currently falling.