Over the past 110 years, 46 035 girls have been named Erma. The name Erma ranks 556th in the United States among the most common names for girls. For the first time more than ten times newborns were named Erma in 1910. The peak of popularity of the name Erma 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.