Rosemary has been given to about 163,523 people in the United States since 1880. It was most common in 1947, which makes it a midcentury name.
Rosemary ranks 251st among American girls in 2025, with 1,222 born that year. Its best year was 1947, when 4,542 babies were given the name, ranking 80th. The typical living American called Rosemary is about 71 years old today. It is relatively most common in Alaska, where it accounts for 0.20% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.