Over the past 110 years, 20 boys and 181 101 girls have been named Eileen. The name Eileen ranks 8963th in the United States among the most common names for boys. For the first time more than ten times newborns were named Eileen in 1931. The peak of popularity of the name Eileen came in the 1930s and 1940s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.