Clarissa has been given to about 40,505 people in the United States since 1880. It was most common in 1995, which makes it a Gen X and millennial name.
Its best year was 1995, when 1,201 babies were given the name, ranking 239th. The typical living American called Clarissa is about 32 years old today. It is relatively most common in California, where it accounts for 0.02% 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.