Over the past 110 years, 43 248 girls have been named Betsy. The name Betsy ranks 570th in the United States among the most common names for girls. For the first time more than ten times newborns were named Betsy in 1910. The peak of popularity of the name Betsy 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.