Over the past 110 years, 25 885 girls have been named Sienna. The name Sienna ranks 778th in the United States among the most common names for girls. For the first time more than ten times newborns were named Sienna in 1976. The peak of popularity of the name Sienna came in the 2000s and 2010s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.