Allen is a distinctive boys' name in England & Wales, ranking #1079 in 2007 with 22 recorded births. The name reached its all-time peak in 2007 with 22 births ranking #1079. Since 1996, the popularity has increased by 120.0%. In 2007, approximately 1 in every 15,061 boys born was named Allen. FALLING Recent data shows the name is currently falling.