Erin is a distinctive girls' name in United States, ranking #574 in 2021 with 527 recorded births. The name reached its all-time peak in 1996 with 6,256 births ranking #51. Since 1996, the popularity has decreased by 91.6%. In 2021, approximately 1 in every 3,111 girls born was named Erin. FALLING Recent data shows the name is currently falling.