Mattheo has been given to about 327 people in the United States since 1880. It was most common in 2025, which makes it a current name.
Its best year was 2025, when 62 babies were given the name, ranking 2274th. The typical living American called Mattheo is about 4 years old today. It is relatively most common in Florida, where it accounts for 0.00% 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.