Ruthia has been given to about 122 people in the United States since 1880. It was most common in 1922, which makes it a interwar name.
Its best year was 1922, when 7 babies were given the name, ranking 4375th. The typical living American called Ruthia is about 77 years old today.
Source: US Social Security Administration, national and state name files, 2025 release. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.