Over the past 110 years, 28 765 girls have been named Aileen. The name Aileen ranks 732th in the United States among the most common names for girls. For the first time more than ten times newborns were named Aileen in 1910. The peak of popularity of the name Aileen came in the 1910s and 1920s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.