Mariah has been given to about 115,279 people in the United States since 1880. It was most common in 1996, which makes it a Gen X and millennial name.
Mariah ranks 448th among American girls in 2025, with 693 born that year. Its best year was 1996, when 5,454 babies were given the name, ranking 63rd. The typical living American called Mariah is about 25 years old today. It is relatively most common in Delaware, where it accounts for 0.10% 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.