Allyn is a distinctive girls' name in United States, ranking #3837 in 1998 with 30 recorded births. The name reached its all-time peak in 1999 with 31 births ranking #3810. Since 1996, the popularity has increased by 66.7%. In 1998, approximately 1 in every 58,896 girls born was named Allyn. FALLING Recent data shows the name is currently falling.