Rhea has been given to about 20,145 people in the United States since 1880. It was most common in 2023, which makes it a current name.
Rhea ranks 639th among American girls in 2025, with 452 born that year. Its best year was 2023, when 577 babies were given the name, ranking 527th. The typical living American called Rhea is about 25 years old today. It is relatively most common in Oregon, where it accounts for 0.04% 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.