Over the past 110 years, 782 boys and 984 596 girls have been named Karen. The name Karen ranks 2840th in the United States among the most common names for boys. For the first time more than ten times newborns were named Karen in 1940. The peak of popularity of the name Karen came in the 1940s and 1960s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.