Over the past 110 years, 1 053 909 girls and 1 306 boys have been named Dorothy. The name Dorothy ranks 9th in the United States among the most common names for girls. For the first time more than ten times newborns were named Dorothy in 1910. The peak of popularity of the name Dorothy 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.