Diamond is a moderately popular girls' name in United States, ranking #168 in 2001 with 1,945 recorded births. The name reached its all-time peak in 1999 with 2,160 births ranking #150. Since 1996, the popularity has increased by 14.6%. In 2001, approximately 1 in every 926 girls born was named Diamond. FALLING Recent data shows the name is currently falling.