Allen is a moderately popular boys' name in United States, ranking #350 in 2015 with 975 recorded births. The name reached its all-time peak in 1996 with 1,468 births ranking #212. Since 1996, the popularity has decreased by 33.6%. In 2015, approximately 1 in every 1,965 boys born was named Allen. FALLING Recent data shows the name is currently falling.