Over the past 110 years, 260 519 boys and 62 girls have been named Allen. The name Allen ranks 134th in the United States among the most common names for boys. For the first time more than ten times newborns were named Allen in 1910. The peak of popularity of the name Allen came in the 1940s and 1950s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.